This is a Deployment Tactics topic.

[Alisi]

i feel like they wouldn't do this because it seems overpowered.

I don't think it would be all that overpowered. It would probably be somewhat under utilized. There'd be at least a 120 second CD, on top of all the other CDs in question (exco, stacks, and indom), and you'd have to hold back your bigger healing spells in the meantime. Plus you'd be holding at least 2 stacks back and missing out on the MP regen. I suppose it would be okay if there wasn't continuous raid wide damage going out a whole ton though.