For those of you who think using this curse would be a bad thing on bosses, I've been experimenting with it and can say that it apparently does not count as damage dealt to the mob where aggro is concerned. Because of this, I'd say it's the ideal boss mob curse to use. 3200 damage is about 1200 above and beyond what CoA does over that same minute, and with none of the aggro you'd get with CoA.

It's a fun spell, but I've so far never gotten a doomguard to spawn from it.