Call Me Awesome

Yep, I have several characters with dual builds and the same uniques in both builds. You do, of course, have to BUY the danged things again though.

I like the Gift of the Ancients set for my shields, 4 pieces gives me a sizeable recovery bonus and 1.8 bonus points of endurance. It's not that expensive, it caps out defense with good endred and I can stack it several times without really trying.

Also, get the +endurance accolades (Atlas Medallion, Portal Jockey) for another 10 points of endurance. With the accolades and 3 sets of GotA slotted my SD/Fire runs 7 toggles and has no endurance issues.

There are ways to handle him. On your build, you can increase your defenses up to the 45% soft cap, that will make a huge difference in your durability.

On your tactics, here's my strategy with CMA, my Inv/Stone tanker.

First, I'm at 45% def to S/L/E/N damage, so while the blue tower's up I need one medium purple per minute to floor LR's tohit chances. I also want to increase my E/N resistance with oranges while the Red tower's up... I use two big oranges for the alpha and one per minute until the Red tower dies.

Keeping that in mind, I go into the final mission with 10 medium purples, 5 large oranges, 2 large greens for when he gets lucky and a couple large blues in case his end drain attack hits.

The sequence of events goes something like this:

1. After the courtyard is cleared and the flier's gone the team gathers behind the Red tower and I eat 2 large oranges & 1 medium purple, then jump in and say hi to LR.
2. Once I have aggro the team starts on the Red tower and I move LR over behind the Green tower so we'll be able to take him out in peace if the flier respawns. (Note, the flier will respawn every 20 minutes from the time the first person enters the map)
3. While the Red tower's up I keep 1 large orange and 1 medium purple active. If LR gets a solid hit in I hit Dull Pain. If he gets me again that's what the greens are for.
4. Once the Red tower dies I let the orange insps fade and keep one medium purple active while the team kills the blue tower. I also start to relax a bit here since his damage just got cut in half.
5. Once the Blue tower dies I let all insps fade and just keep LR taunted. From this point on you're practically home free as a tanker.
6. The team kills the Yellow and Green towers, then joins me and we take out LR. Make sure to keep LR facing away from the team as he has a nasty cone attack. Squishies beware too because he also has a small radius PBAOE that can really hurt.
7. When LR hits 20% and hits his pet nuke just keep pounding on him until he goes down. A kinetic with Fulcrum is great here, as is a Fire controller with Bonfire... that knocks the pets out of the way so you can concentrate on LR.
8. Profit!

Using this method I can handle it without any team support. Of course if we have a FF on the team then I don't need the purples, likewise if we have a sonic I don't need the oranges. A stormy with O2 boost is nice to have... a little known secondary effect of O2 boost is end drain resistance, and LR DOES use his end drain attack in melee now.

Oh, I'd suggest getting the temp power "Ethereal Shift", it's a 30 second CLICK phase shift power and it makes a great panic button if things go south on you. Just taunt, hit the power and you have 30 seconds of invulnerability to recover. With a little taunt duration slotted you'll hold aggro until the phase shift ends.

I've gotten the MoSTF on CMA 3 times, and once on my Granite tanker. Yeah, the Granite's easier but I prefer CMA.

First and foremost a competent player behind the keyboard... this really can't be stressed enough.

Assuming competence on all teammates (not really a very good bet in general but we can hope) buff/debuff powersets stack up to become stupidly good the more you have so I'll go with that. Dark Defenders, Rad, Sonic, FF, Traps, Cold, Kin, TA and if they can manage it well, Storm.

I purposely don't list Emp here, not because it can't be a good set, just because the VAST majority of Emps I've ever seen are of the "pure healer" mentality. Anytime I see an Emp on the team it's a bit of a red flag, I assume that they're useless until proven differently. The few times I find one who uses the buffs AND blasts well are a pleasant surprise.

Give me a team full of good debuffers with a few buffs and that's a team that will destroy nearly anything in the game with ease. There's a reason that teams of Fire/Rad controllers are so crushingly dominant.

All of them? No, probably not simply because several aren't played much. However, I probably will run all of the ones I play to any extent... eventually.

Right now I've unlocked on 4 of them, and 2 are slotted.

I generally slot all Dull Pain type powers with 5 Doctored Wounds; it'll max out recharge and/or heal and gives you a 5% recharge bonus... something that's always useful for a Stone tanker. I typically leave off the End/Recharge IO and settle for slightly below ED cap recharge maintaining full heal and HP boost. Leaving it off costs about 15 seconds of recharge, but since I seldom need it every time it comes up I'll use that last slot somewhere else.

If you're more interested in maxing out the recharge you can leave off the heal/end instead for slightly less heal and full recharge. Either way the difference is pretty minimal.

Invuln Pros:

1. Hard capped S/L resistance possible with Tough.
2. Massive heal and HP boost power in Dull Pain, possible to make permanent and cap HP.
3. Relatively inexpensive to soft cap defenses to S/L/E/N damage
4. Invincibility offers considerable defense to all but psi and additional def per enemy in melee.
5. Great taunt aura.

Invuln Cons:

1. Weakness to Psi damage. However, Psi is rare and mostly where it exists it's fairly low damage.
2. Unstoppable (tier 9 power) is highly situational. It offers capped resist to all but Psi while it's up but it's very dangerous when it crashes.
3. Fairly low resistance to E/N/F/C damage types.

WP Pros:

1. Set and forget powerset with no click powers.
2. Good passive regeneration and HP boosting powers.
3. Good endurance recovery with Quick Recovery
4. Decent resistance to most damage types including Psi.
5. Regeneration boosting power based on the number of mobs around you in Rise to the Challenge.
6. Moderate defense.
7. Decent tier 9 power that adds a bit to your durability with decent uptime.

WP Cons:

1. By far the worst taunt aura in the game, it's duration is less than 10% the duration of every other aura. This is it's biggest drawback.
2. No tools for recovering from burst damage.

I do have a Stone/energy at 50... with that said the combination really isn't all that great anymore; if the character's still really low I'd change to another secondary. Years ago /EM was a good set but in the shape it's in now it's one of the worst available to tankers.

On the Stone portion in my opinion the must haves are Rock Armor, Earth's Embrace, Rooted, Mud Pots, Stone Skin and Granite. Minerals is optional and Crystal and Brimstone are skippable in my opinion. About half the time on my Stone tankers I don't run Granite, just Rock/Rooted/Stone Skin is enough for a small team unless you run into something nasty.

Pool powers you'll want would include Hasten, Teleport (It's the only way you can move effectively in combat without turning off your mez protection) and possibly Hover to make TP easier to use for zone travel.

On the EM side you can pick and choose some, the biggest drawbacks are the extremely long animations on the heavy hitters and the highly single target focus of the set. I find my Stone/EM constantly "corpse blasting" on teams; I click on Energy Transfer and spend 3 seconds staring at my glowing fists while the team kills my target, then ET fires off on the already dead enemy and starts it's lengthy recharge. I target another mob and click Total Focus and the same thing happens again. Unless you're fighting a really tough mob like an EB or AV it gets frustrating since you'll waste so many attacks.

I'm not saying you won't like the combination, just that with the changes a few years ago I don't like the combination anymore. I have two level 50 stone tankers, one Stone/EM and one Stone/Fire. There's literally no comparison in the utility of the two. Naturally both are almost unkillable by almost anything in the game, that's a given in a decently built Stone tank even on pure SO enhancements. The /Fire is vastly superior in aggro management thanks to two large AOEs and deals more damage... it's attacks all animate quickly as well. The /EM, well, it has glowing pom-poms on it's hands.

If you're ok with the drawbacks of /EM in slow animations and poor AOE damage then you may enjoy the character; back when I rolled and leveled mine it did have poor AOE but it had fast animating attacks. Alas, it's not that way anymore.

In reading over this I guess I'm maybe overstating things somewhat, but that's still the only 50 I have that I've had no desire at all to play in the last few years.