even if you dont use it, it is a good set mule and with the contagious confusion proc its not *too* bad
overall its kinda meh and more of a personal choice but if you need some extra rech from a cheap purp set it does make a good mule and as i mentioned above its not half bad with the proc in it
On its own, it is a bad power. With the purple proc, it is a good power.
Why Blasters? Empathy Sucks.
So, you want to be Mental?
What the hell? Let's buff defenders.
Tactics are for those who do not have a big enough hammer. Wisdom is knowing how big your hammer is.
What Stratonexus said. Pretty much the only reason to take World of Confusion below level 50 is for cosmetic reasons (you like the bubble around you).
WoC is built to be a set mule - under level 50, that means the dirt cheap confuse set for some easy +rech if you have slots to burn. The real reason to take World of Confusion is the purple Contagious Confusion proc, which makes the power's confusion effects actually noticeable, and the rest of the purple set's set bonuses (hefty +recharge and +def). If you're not going to IO it (for the IOs' effects, not the power's inherent functions) and you aren't in love with the little bubble, then don't even think about taking it.
Rule number six of an empathy defender is NEVER underestimate a blaster's ability to die. I don't care if he has CM, Fort, both RAs, bubbles (both FF and Sonic), and is fighting next to a Storm defender with hurricane on. If there is a way to die in that situation, the blaster will find it.
I took it on a blaster. It was crap until I slotted the contagious confusion proc. Then it became awesome.
I plan to try it with 6 damage proc's 
sure, there's no accuracy and no Contagiuos Confusion but it looks fun.
World of Confusion
- (A) Eradication - Chance for Energy Damage
- (29) Scirocco's Dervish - Chance of Damage(Lethal)
- (29) Obliteration - Chance for Smashing Damage
- (31) Armageddon - Chance for Fire Damage
- (31) Cacophony - Chance of Damage(Energy)
- (31) Malaise's Illusions - Chance of Damage(Psionic)
perma jump is ---> /up 1
6 slot it for the best ranged defense bonus in the game
WoC is by far one of the best tools on a mental maniplators arsenal.While lvling up I suggest investing arund 3 slots in it and using various procs, especially dmgs. At lvl 50 the 6 part purple confusion set is W/O a doubt one of the best advantages to the set. Not only will the proc confuse actually effect even bosses for a few seconds. but the natural field becomes highly effective against minions. Its not about making them your mindless army its about them turning away from you for the space of an attack, directing it at another enemey which makes them hit that one back. WoC buys you precious seconds to blast away. Its in a way a form of aggro misdirection defense.
Can you tell me how often it pulses, then, and how long each "hit" lasts? I'm not planning to use it as a damage power, or a set mule; with an AR primary, the only time I spend in melee range is when I need to pop a Drain Psyche.
Namely, is it worth taking? From what I can look up, it pulses once every four seconds for a duration of one second - if that's true, then even triple-slotted with confuse enhancements, it'll be impossible to keep anything mezzed, and the long pulse interval makes it sound too unreliable to use defensively either. So, I'm curious whether my numbers are wrong, my tactics are, or should I just spec out of it?