It works fine on Sarth trash.
I like it for the comedy factor. First time we killed Sarth+2 I hit it to kill the last of the elementals that were up. It chose to blow up Sarth's corpse leading to a few seconds of people thinking the corpse despawned before we could loot.
The panic was glorious.
As far as relying on it for AE pulls it's probably not that great, but it will add something to your threat after there's something to blow up.