Quote from Azutael
Well, not really. It would already be a killing blow, so the mobs would still have died. it's just that it feels like you are insanely overpowered, because of all the ridiculous high numbers popping up.
Which makes it fun, but it's not actual dmg. So it's kinda useless I suppose.
Though, apparently it IS overpowered together with life steal. Enjoy it while it lasts I suppose
So guess you are right after all, that it is OP. Hopefully people don't waste all their gold or money if it ends up being nerfed.
The damage from the proc is not the point. Its all about the healing. You still deal 13m damage. The healing part is what makes this overpowered. You no longer need ANY LoH. Besides it has a flat 25% damage modifier against demons (all mobs) at a max roll. Basically means that when you have 40k dps you get an extra 10k dps from 1 affix on an item.
In other words you get 25% more dps and almost every killing blow heals you up to full HP.