It can potentially wreck certain decks.
It can wreck some King decks.
It can wreck Omar if he wants to nab a certain card back every turn.
It can slowly de-power Astrid, but she'll probably run over you before you even do this.
Welcome to the world of control.
Kilik + Wonderworld Warriors.
Remove all their attacks and hide behind a big wall of grey.
You'll die to Pommel Smash and Paul Phoenix.
Oh yeah, Controller of Souls, too.