Spot removal for Shops? I kinda like it since it's a Cabal Pit colorless decks can play.
The problem is it doesn't kill Mentor (you'd need 2 Dunes for that). But it deals with Revoker, PPyromancer and Thalia. I guess it's meta dependant and, right now, I it doesn't feel that great due to Mentor and Jace Vryn, but it's a nice effect. Coupled with Crucible it can do a lot.