The Blaptroller: Reloaded -- Guide To Elec/Elec/Elec Blaster [I19]

>>> PROPS TO MY BROTHERS WHO COULDN'T MAKE IT <<<

This guide reflects my knowledge and experience as an Elec/Elec blaster. That said, lots of information is being taken from previous posts, most notable Mystic_Amethyst's post “Electricity^3: The Guide To Blaptrolling” found here: http://boards.cityofheroes.com/showthread.php?t=117829 . In fact, I would go as far as to say this is a fan-inspired continuation of his work, with updates like IO sets and what to do with those three new powers we have from ditching Fitness Power Pool. I would like to take this space to thank Mystic for his/her hard work and number-crunching, cause without this guide to inspire me, I may have never stumbled across the BEST CLASS/POWER COMBO IN THE GAME, BAR NONE. Also, thanks to all the other Elec^2/3 Blasters who have given input to me and others throughout the game, without you folks this advice and information would never be as accurate as it is!

>>> BLAPTROLLER? IS THAT EVEN A WORD? <<<

No, it's not a word, it's a lifestyle. It's a way to explain the versatility in some blaster builds, in which aspects of blasting, scrapping. And controlling, are combined to make one hell of an awesome hero or villian. While the name makes it sound like some sort of silly government position, it's actual a word that should be feared across all of Paragon and Rhode Island itself (That's where PC is located!).

Now for the most part, you're playing as a Blaster, something you should always keep in mind. You're main job is walking the fine line between how fast you can kill enemies vs. how fast they can kill you. Even with the other roles you'll be filling in groups, at the end of the day, you're gonna want to be racking up as much damage as you possibly can while still preforming these other roles.

Your “scrapper” role is filled by your insane melee damage. You secondary pools will have 2-3 melee abilities you'll be picking up and regularly throwing into rotation to maximize damage output. You will NEVER have the survivability of a scrapper. Even with IO sets and skewing the set to have more +DEF or +RES, you are still a glass cannon that while shatter on the first onset of focused fire. Also, your primary endurance drains will require you to be in melee range of most of your enemies, meaning you'll have to be good at manuevering in and out of groups. Done cautiously, you can spend entire fights next to tanks and scrappers and not have to worry to much about faceplanting.

Finally, your controller role is filled with both AoE pseudo-control and direct single-target holds. You're AoE control comes from Endurance Drain and -recovery moves. Simply stated, if you're enemies don't have the endurance to attack, they can't attack. By keeping groups tapped out, you'll effectively have them locked down, with the only course of action being to run around with nothing to do till they get a small smidgen of blue to throw off the occasional brawl. Hilarious?! Yeah, it is. Insane?! You betcha! As if that wasn't enough, this build will give you THREE holds; one ranged/end drain oriented, one melee/damage oriented, and one from Epic Power Pools. You'll be so knee deep in control that you'll swear that red class icon is starting to show tints of pink!

When you combine all this, you're left with a versatile class capable of handling almost any situation in an effective and fun manner!! In fact, I would even go as far to say as you can cover as a pseudo-tank and healer in smaller groups. Tank, cause you can keep things aggroed on you but not take damage (Cause they have no endurance to hurt you) and healer, cause if you pick up Heal Other, you can drop healbombs onto people who need it without worry cause mobs can't attack without endurance! I wouldn't actively advertise these roles though, as its not gonna get you very far, but it's kinda fun to think you're every class-type in the game (Even an MM, cause you get a really bad pet!)

>>So Why Elec/Elec? Isn't Ice/Energy The Blap Build?

Yes, there are other Blapper or Blastroller builds, but very few combine the two as effectively as Elec/Elec. Ice/Energy comes close, with it being a little stronger on the scrapper section and a little weaker on the controller section, but either way, just as effective. Visually, electricity is much cooler looking and offers some unique moves to the Blaster class you can't get otherwise. Also, from a character concept point, you can fit elec/elec easily with other origins, could be a robot (My toon is a redesigned Praetorian Clockwork), could be a mystical shaman who controls the elements, a scientist whos harnessed his bodies own electromagnetic fields, mutants, etc etc. However, there is one reason you're going Elec^2 and we all know it's.....

>>Endurance: It's Only For You

The real reason you're playing an Elec^2 blaster is cause you love endurance. You wake up in the middle of the night in a cold sweat, the taste of blue inspirations fresh in your mind. If you could crush it up and snort it you would, thankfully, its a lot easier then that. Endurance is just lying around, free for anyone to take, yet, you love endurance so much that you feel you're the ONLY one who is allowed to have it. Sure, your teammates have endurance, but that's only cause you allow them to use it and only if it benefits your ability to get more of it. Enemies on the other hand, they are NOT allowed to have endurance! Who knows what diabolical (or if you're a villian, heroic) actions someone could do with access to such a delicious commidity. But you're a “Real Man Of Genius”, you Beast of the Blue Bar, Ender of Endurance, Muncher of Mana, Stealer of Stamina!

All kidding aside, electricity moves (Regardless of class) will drain some endurance. For the most part, it'll be a small amount that won't make a difference in the grand scheme. However, some moves (Short Circuit, Power Sink, Thunderous Blast) will drain huge chunks of endurance and remove the ability to recover it. This is gonna be a big part of what your day-to-day battles will involve. While you're still a damage based class, you're gonna want to be draining endurance any chance you get, cause it'll let you take less damage and control a group almost as perfectly as any controller could.

This is your quick and dirty ranged blast. Doesn't pack the punch of Lightning Bolt, but recharges quick and is useful for finishing off people, quick blasts to runners, or early level pulling. Before changes to Defiance, I would have suggest skipping this in favor of Charged Brawl, as it does more damage for relatively the same cost. However, since this move can be used while stunned/mezzed its a most have.

Slotting:
-SO's: SO's: +ACC (1-2), +DMG (3), +REC (1-2) (Really could get away with 4 or 5 slotting this move with just ACC/DMG)
-IO's: Thunderstrike (6)

Lightning Bolt
Your second “Bread n' Butter” ranged move. This is your single target damage move and most likely an opener on a damage rotation. Not much more then that, just sweet damage in a can.

Slotting:
SO's: +ACC (1-2), +DMG (3), +REC (1-2)
IO's: Thunderstrike (6)

Ball Lightning
Your “BnB” Ranged AoE. Great move, deals damage over time (DoT) as well as a small bonus hit on first hit. It has a pretty large radius and will be a majority of your ranged AoE damage. It has decent recharge, decent end cost, and all-in-all is a good move that preforms great in any and all situations with more then one bad guy beating down on you. Also a great pulling tool, since it takes time to travel from you to target, allowing you to move after throwing it out.

Slotting:
SO's: +ACC (1-2), +DMG (3), +REC (1-2)
IO's: Detonation (5-6) or Positron's Blast (5-6) if you can afford it.

Short Circuit
[/QUOTE]
The first of your "endurance-control" powers and a MUST HAVE as soon as it's available (Lv. 6). This is gonna be your primary opener from here on out. This move is a PBAoE (PB meaning Point Blank or Player Based) so you'll have to run on up into (or hover over top of) a group to use it effectively. The move itself does similar DPS to Ball Lightning and makes a great combo, but that doesn't matter cause it's also going to drain a huge chunk of endurance from anyone it hits and throw a -recovery debuff keeping them from getting any endurance back for the next 5-10 seconds.
The move does have some down falls though. Early on, before its slotted and has SO's, its end drain is somewhat weak and its cast time leaves you rooted and vulnerable for a good 3 seconds. M_A states slotting it for damage in earlier levels will help make it a little more useful till it can shine with DO's or SO's. While I agree, I also think as SOON as you can you're going to want to switch this over to an END killer.

Slotting:
SO's: +EndMod (3), +REC (3)
IO's: 6-slotted Performance Shifter

Aim
It's Aim, stupid. Do I need to explain this? Fine.. 63% ACC+ and 37% DMG+ buff. You pop it and then hit stuff better. Really a no-brainer. If you wanted to hold off on picking this up until later, you'd probably be okay to do so, but it's a move you're gonna want and going to use very often, worth picking up whenever you decide to.

Slotting:
SO's: +3 REC
IO's: I know there are some specific IO's for Aim/Build Up, I just don't remember what they are. Reticulated Reticule or something. Worth snagging, but ultimately, you want recharge in whatever route you go.

Zapp
It's a damn good snipe, as it does endurance drain along with the rest of it's sniper duties. That said, it's not very synergistic with the build. If you want a snipe, take it, otherwise, you've got better powers to waste points, and the way the builds set up, you'll run into problems slotting it effectively.

Slotting:
SO: +ACC (1), +DMG(3), +RNG(0-2), -INT(0-2)
IO: Sting Of Manticore (6)

Tesla Cage
Your first hold and first real "controller" ability. As far as holds go, this one is KING!! Reason being is it has an 8sec -recovery attached to it, so not only are you holding a target, but preventing it from regaining any endurance while held. I think this works even if the hold doesn't stick, due to targets higher then average hold protection (So say a boss, who you would need to stack two holds to actually HOLD, will get the debuff by using just Tesla).
This now offers the first taste of versatility to the build. You have the option of forgoing traditional “Blow Everything Up” and can swap it with “Blow Everything Up (While Keeping That One Guy From Killing Me)”. In earlier levels, especially if you're like me a ramp up difficulty to the absolute highest you can possible take without eating dirt every pull, this move will be a life-saver. Pop it on a Lt before engaging a group and you can save a decent chunk of HP from the encounter. Once you get other holds you can start stacking them with Tesla to hold bosses or higher.

Slotting:
SO's: SO's: +ACC (1-2), +DMG (3), +REC (1-2)* (Can get away without these)
IO's: Basilisk's Gaze (4) or Lockdown (6)

Voltaic Sentinel (or Sparky!)
You pick a spot on the ground and summon a small floating ball of sparks (Looks like Ball Lightning, kinda) which will float around behind you until, literally, ANYTHING happens to cross by, which sends this little dude into a rampage, causing it to lash out with a Charged Bolt every 10 seconds. It is uncontrollably and can't be told not to shoot at things. You can avoid going near mobs to avoid it aggroing, but once in range, it'll go for the gold. Oh, and as it has no HP and, as far as I know, untargettable, any aggro it draws goes right to you. Sweet, huh?!?!

Well, other Blasters schooled me on why you ACTUALLY want this move. Now it will never turn the tide or become a cornerstone attack, but it does serve a very direct purpose: buffing you. Sadly enough, this little fellow affectionately referred to as "Sparky", does piss-poor damage up front and only decent damage when all hits are taken into account, but it comes with its own Defiance bonus of 20.08%. THIS IS NOT A TYPO, 20 MF-ING PERCENT. However, like all Defiance attacks, it wears off after 7 seconds (And have confirmed this both with actual testing and through forum posts). The icon persists and it appears you do have 20% buff, cause it says it, but if you watch your damage, you'll see it drop off after a couple of attacks. Thus, its nice for a quick Build Up + Extra Dmg. As JakHammer points out below (and thanks for the contribution, check the last post for props!!).

Slotting:
Thunderous Blast (Or the Electric Boogie)
Your nuke.. and what a nuke it is. Your character brings his hands up, seemingly confused as to why his left and right hands are suddenly crackling with electricity and then, before you can blink, it's all blasted out and whatever swarm of unlucky baddies are in between you and your target. Like all nukes, it completely drains endurance and keeps you unable to recover for 10 seconds or so. Seems like a pretty bad trade off.. all your precious blue for one attack... Well, its worth it usually just to see everything do a little dance then fall flat on their faces. Great for clearing an entire spawn for quick movement through missions, finishing off a particularly tough group, or a “If I'm Going Down I'm Taking You With Me” move.
This nuke, however, has three more advantages that other nukes lack!! First, it doesn't send enemies halfway across the map, instead, it leaves them held for a couple seconds. Seconds, it drains a HUGE chunk of endurance and leaves mobs with the same -recovery debuff you're affected by, albeit shorter in duration. Finally, it's RANGED! Not that you're afraid to run into melee range with this build, but its still a nice advantage and MUCH easier to line up on groups. Easily one of the best Tier 9 abilities in the game, and its alllllll for you!

Slotting:
IO's: SO's: +ACC (1-2), +DMG (3), +REC (1-2)
SO's: Detonation (5-6) or Positron's Blast (5-6)


>>> ELECTRICAL MANIPULATION <<< “Judge, Jury, and Electricutioner”

*** THIS SECTION IS FILLED WITH OLD DATA -- WILL BE REPLACE SHORTLY --- CHECK
Electric Fence
Meh, you don't have a choice in this so really not worth going into great detail about. As does the rest of electricity, it drains end, a little more since its a DoT, and is good for that at earlier levels, along with a method of soft control to give you some space between you and that pesky Lt. Other then that, won't get much use once you get holds and better attacks to fill chains.

Slotting:
SO's: +ACC
IO's: Whatever you feel like? I'm not aware of any decent 1 slot Immob IO's that would be worth mentioning.

Charged Brawl
This is the biggest descent I make from Mystic_Amethysts build. He seems(ed) to love this move, and for all intents and purposes, there is really not much to hate on. It's more damage then Lightning Bolt, extremely quick, and comes back fast enough to be used multiple times per fight. It also has a small chance to sleep a target (Yay?). If you're leaning towards a more Blappy build, its definitely a worthy choice. It can also be exchanged for Thunder Strike if you don't like the long activation time and don't need the KB effect that comes with TS. It is worth nothing that Charged Brawl takes a decent chunk of end to activate, but nothing major.

Note: Player feedback has leaned in favor of Charged Brawl. Again, I think its an awesome move, just not one that I can fit into my build and slot effectively. Ultimately, I'd say you're gonna want no more then two melee moves, unless you're going pure blapper and don't mind missing out on some R-ST blasts. In general, you'll get more use out of CB, but more utility out of Thunder Strike.

Slotting:
SO's: +ACC (1-2), +DMG (3), +REC (0-2), +EndRed (0-2)
IO's: Mako's Bite (6) or Kinetic Combat (4)

Lightning Field
This move sucks. If you like it and think its a stand by, good for you, I'm glad we live in a society where your opinions, no matter how wrong, are still tolerated. It WILL help you keep enemies drained of endurance, but usually will only do so if you're already actively draining endurance. Otherwise its an easy way to waste craploads of endurance for a small trickle of damage. If you're going a more Blappy route, you can take it, 99 times outta 100, it's just better to wait on Short Circuit to recharge. Leave this for elec tanks/scrappers.

Slotting: ...is only for good powers, so why are you expecting something here?

Havoc Punch
Who's that creeping on my window? BAAAM, nobody now! In addition to looking friggin' awesome, this move packs a punch (pun intended). That's right, you got all the damage of a SNIPER attack in a quick overhead smash. It also knocks back and has the chance to sleep (Which is pointless as KB clears that status) but you're really only using this move for one purpose; smashing face. It's a good 1-2 combo with Charge Brawl, if you picked that up, or a great stand alone move to use after a Short Circuit/Power Sink combo. GET THIS MOVE NOW!!!! STOP READING AND GO!!!

Slotting:
SO's: +ACC (1-2), +DMG (3), +REC (1-2)
IO's: 6 Slotted Mako's Bite or 4 Slotted Kinetic Combat both solid choices.

Build Up
It's Build Up, dummy.. Really? I need to talk about this one too? Sigh.. well it's a +100% damage and +63% accuracy. So yeah, you know how you kill stuff? This lets you kill stuff faster and with more accuracy. What's not to like? I unno, can't change the animation color, that kinda sucks? In combination with Aim, your attacks become classified as weapons of mass destruction, ESPECIALLY Thunderous Blast. In fact, TB should only be used AFTER BU+A for maximum effectiveness. I'll mention it later, but its worth stating that Hasten (From Speed Power Pool) works wonders with these two moves, making them available redonk-u-quick.

Slotting: 3
SO's: +REC (3)
IO's: Again, I forget the name, will update when I remember. Think its Reticulated Reticule or something

Lightning Clap
Mystic_Amethyst tells you to skip this power, and for most of CoH's life, I'd have agreed. However, with the Fitness pool becoming innate, we have three powers to play with but no slots to accompany them. This means you gotta make due with some 1-slot powers. This is where I find Lightning Clap shines the most. It's effective right out of the box. It won't disorient very reliably, but it will instantly buttslam anyone in its range, sending them ragdolling across the map. This is the same KB you'd get from Thunder Strike, so if you wanted to skip a power, this would be the ideal choice.

Slotting:
SO/IO: 1 +ACC

Thunder Strike
The “Total Focus” of EM. This power has a very long animation time. Your character does a jump in the air, most of which appears to be filmed in slow-mo, then brings down all the fury of a cakeless fat kid to the poor sucker who happened to be targeted. Anyone around the target takes some superficial damage and is scattered via knockback. Very powerful finishing move, or just simply a way to do damage and get some breathing room. I use this in conjunction with Lightning Clap if I'm in a bad situation but think I can turn it around, or need to keep mobs busy while I'm waiting on a recharge (Such as Aid Other). I could foresee forgoing this move and using Charged Brawl → Havoc Punch as your melee options. That would be good for someone who wants melee in a “Run in, Smack Some Heads, Run Out” fashion. Also, you may want to consider taking this if you forgo Lightning Clap (Which is as much as a viable option as taking it, I'd say) simply for the AE knockback, really good for giving yourself some breathing room, or sneaking in a quick Aid Other.

Slotting:
SO's: +ACC (1-2), +DMG (3), +REC (2-3)
IO's: 6 Slotted Mako's Bite or 4 Slotted Kinetic Combat

Power Sink
This move has two functions. First and foremost, it's your Blue Inspiration. For every enemy it hits, a portion of your endurance is restored. It'll always give more then it'll cost (Unless you're not in range of an enemy, otherwise it AUTO HITS) and used on three or more will completely restore your bar.
When it's used after Short Circuit, it'll comepletely drain the endurance of pretty much anything but the biggest of baddies. They'll be left with no endurance, unable to regain any endurance, and confused, running to targets but unable to attack them. It's almost sad... Almost.
If it isn't painfully evident by now, this move is a MUST HAVE as soon as it's ready pick... which isn't till 35, till then just blow stuff up, silly!

Slotting:
SO's: EndMod (3), +REC (3)
IO's: Performance Shifter (5-6)

Shocking Grasp
You're second hold and your second “If Paired With X” move. Unlocking this allows you to hold bosses by applying it with Tesla Cage. Not only that, but it does high damage, albeit in a DoT, and can double as another strong Blapper move. My only issues with this move is it requires you to be RIGHT next to your target (Melee range) which can be a bit hairy if you're trying to stack holds on a boss. Otherwise, it does primo damage along with a strong hold. Pick it up @ 38 and don't look back.
Also, do note that this move takes melee IO sets, so if you were to use it as a damage attack w/ hold, you could throw in a Mako's Bite or Kinetic Combat. Doing so would diminish the effect of the hold (As those sets don't come with a +Hold enh) but would heavily augment the damamge.

Slotting:
SO's: +ACC (2-3), +DMG (0-3), HOLD (0-3) (2/2/2 is a solid way to go, I prefer 1/3/1 and using the Epic Power Pool as a reliable second hold to pair with Tesla)
IO's: Basilisk's Gaze (4) or Lockdown (6) for hold or Detonation (5) or Positron's Blast (5) for damage

You raise your hands and release the thunder. Well no, cause that makes the move sound cool looking. You actual just kinda hold your palms out and electricity kinda sputters out. But hey, it fills that gaping hole in your ranged AoE rotation and perfect for giving Ball Lightning someone to play with.By now, this should be second nature. You could throw in +RNG enhancements to get better use from the AoE effect, but I've found it already huge and has no problem hitting er'rbody.

Slotting:
SO's: 1-2 +ACC, 3 +DMG, +1-2 REC
IO's: Detonation (5-6) or Positron's Blast (5-6). If you're hurting on slots, you can throw a Air Burst (4) for some quick S/L def.

Shocking Bolt
A third hold? Man, this was already easy enough. However, if you go the DPS route with Shocking Grasp, this makes for a great second hold to stack on bosses without having to enter melee range. Grab it and slap it next to your Tesla Cage, and just mash that area of the keyboard whenever you need a hold.

Slotting:
SO's: +ACC (2-3), +HOLD (2-3), +REC(0-2)
IO's: Basilisk's Gaze (4) or Lockdown (6)

Charged Armor
Well, it would be nice if you could just evade everything, but fact's are, you're gonna get hit. Charged Armor reduces that damage. It's the best toggle you're gonna get, Tough sucks and Weave is worse then this. Gives you an awesome looking armor effect too, shocks going around your body, perfect for the electrical-minded.

Slotting:
SO's: +DmgResist (3), EndReduc (0-3* If you can spare it).
IO's: Reactive Armor (2-3) / Steadfast Protection (Def+) / Resistence IOs (3) (By now you're hurting for slots, but spare whatever you can to try and max out S/L/E resists here, and add defense wherever, cause you're gonna need it)

EM Pulse
A good power, even in the hands of a Blaster, but not worth the price. Instead of disorienting foes and get tapped out, why not just use a SC/PS drain to control or TB to blow everything up? If you want it, get it, but don't slot it.

Slotting: ...Just slap a recharge on it, you'll only use it for an “OH S#!%” moment.

Surge of Power
Another panic button, this one more defensive based. Doesn't stop hits from coming in but makes sure that damage ain't much (Unless it's mind bullets. That's telekinesis, Kyle) and makes sure you got plenty of endurance to counter with any and everything you got. Do this quickly cause you're gonna come to an abrupt crash after the set amount of time.

Slotting: Again, I'd slap a recharge in it and call that good, allows you to devote slots to moves that could use them more effectively.

>>> POWER POOLS <<<

So, again, I'm lazy, I don't have all the numbers. I've seen them in other posts, things such as Mystic's post (up top) and other guides like the Blasters Guide to Defense. Go do some searches and you can find what you need if this isn't suffice.
With I19 and Fitness moved to Innate Power, we are left with three new power choices, but no new slots (Still have to slot Stamina). A lot of powers you may have let pass can suddenly be selected. Take care in selection, but know you'll have a couple points you can really put anywhere without worrying about gimping a character.

>>> Travel Powers

This is really your preference. Each with it's own pro's and con's. Here's a quick breakdown of the powers I'd take and why. Don't need more attacks and sorry Teleport, you're just not that helpful for this build. It's a great TP, but is more support oriented. As a general rule of thumb, you should only have one TOGGLE TRAVEL POWER, but you can dip into other power pools for benefits like Hover or Hasten.

>> FLIGHT <<
Slow and steady, flight has a set speed and you just go any direction. It's easy to use and best for AFK-traveling, as well as a good “GTFO” travel power, this is my power of choice for this build.

>Hover → Slot: +FLY (1-3) and +Karma (KB Protection) for KB safety.
Awesome. Easily avoid melee fights by simply flying above them. Moves like Short Circuit and Power Sink still work if you're above enemies, albeit a slightly smaller area of effect, due to the way the PBAoE mechanic works (Think a sphere with your character as its core). Also gives +DEF, but it's like 2.5% base and not worth slotting for. With the right slotting, it's made versatile (quicker) in combat and with Karma IO you'll be very resistant to most KB effects.

>Flight → Go places faster! You can slot it with Freebird if you want +Stealth in and combine it with another power for full invisibility. I'd recommend going with Celerity for +Stealth in Sprint, that way you can be full inviso while Hovering and not gimp Flights speed further by taking away a +FLY slot.

>> LEAPING <<

>Combat Jumping → Makes you able to change direction mid-jump, makes you resistant to immobilize, and offers +DEF similar to Hover. While it's nice, Hover still allows you to negate melee. CJ is useful for going down Leaping Tree however.

>Super Leap → BOING! BOING! BOING! ...Yeah, I'm bored now. Pretty much it. It's quick and has similar mobility to Flight, and again, can be slotted with a +Stealth Unbounded Leap IO, same applies though, better to go with Celerity.

>Acrobatics → Toggled resistance to KB and Hold effects. Hold protection is Mag 3, meaning one hold will cancel Acrobatics, but not hold you, while the second hold would stick you in place. It's alright and worth the point if you're going leaping for traveling anyway. Slap a +EndRed in the innate slot.

>> SPEED <<

>Hasten → Make EVERYTHING recharge QUICKER! It's pretty much a must in most any character I make. Costs no endurance to activate but takes 20 when it fades off. Fully slotted with +REC (3), it's up two of every three minutes. Get it whenever you can fit it in, but definitely by the time you've got BU and Aim. Used to slap a +DEF buff too, no longer the case. (Thanks for pointing that out DG)

>Super Speed → Vrrrrrrrrrrrrm. Superduper fast, but also limited mostly to the ground and where you can get to via jump. With Temp. Travel Powers though, you can get around easily without much problem. It also provides +Stealth and can take Celerity for a full inviso power in one toggle. Also pairs well with Hover, so you can run in, open with SC/PS, then jump into Hover to escape any possible melee.

>>> OTHER POOLS <<<

There's plenty other pools to choose from, but only a few are really worth it. Tough/Weave aren't worth the power/slots they require, IO sets can make up for that. Leadership scales are low for Blaster, so ignore that too. They are:

1. Concealment → Stealth: Gives you more +DEF (not much but its nice) and +Stealth toggle, combined with +Stealth in Celerity gives full inviso with Stealth/Sprint toggled. Invisibility is full inviso but is non-combat only, so don't get suckered into thinking it's simply a better Stealth.
2. Medicine → Aid Other or Stimulant → Aid Self: Pick between the first two (Aid Other will help get Medic badges, so I went with that) and then reap the benefits of Aid Self. Unslotted does about 20%, and each slot makes it better. Devote as many slots as you can spare, I'd say 2-3 is best, and slap in +Heal SO's or whichever +Healing set you can muster up for cheap, getting a +Heal and +Rech/Heal
3. Speed → Hasten Hasten! It's a great buff, really worth it. Kills the recharge on big moves and makes quick ones that much quicker! Can't get it perma-ed, and causes the end crash, but hey, its still frigging sweet!

>>> NOTES ON SLOT/SETS <<<

So, by know you've got an idea what to do, and how to do it. Here's some clarification on slotting throughout the guide. For holds, I prefer at least two +ACC, to guarantee its going to land. As for attacks, I have listed 1-2. If you have IO sets which help ACC, you'll be okay, and if you don't mind missing from time to time, again, you're fine with just one +ACC SO. I would however say AoE attacks should have two just to make sure.

As for the set mentioned, they will maximize defenses, with a focus on ranged or melee avoidance, which will probably be the most likely you'll encounter, as well as resistances. You can get better sets, but those I have are very economic and are gonna give plenty of bang for the buck.

NO, this is bad information and 100% inaccurate. The 20.5% Damage buff only lasts for the first 10.6 seconds of Voltaic Sentinel's duration and the effect does not stack from the same caster.

Yes, all day long. I love the large recharge bonuses from minimal slotting, plus 2.5% Mez resistance (always great for a Blaster) and a 3% Damage bonus, again, love it!

Yes, Unslotted Voltaic Sentinel attacks every 3.67 seconds for its 60 second duration, thats about 16 attacks, mine only seems to attack 15 times so I’m sure Arcana time plays in there somewhere. Each attack does 44.49 energy damage, so even if we calculate at 15 attacks, that’s 667.35 damage for its duration if all attacks land. That’s HUGE for a fire and forget power.

Unslotted Zapp, damage per activation, 172.67.

This might make you laugh a little. Unslotted Thunderous Blast, damage per activation 265.89.

I agree.

Almost forgot, Phantasm here is a great site, City Of Data. Check out the Power Quantification tables.