Gaze of the Gorgon - 3B/G Instant - Common Regenerate target creature. At end of combat, destroy all creatures that blocked or were blocked by that creature this turn. OK, so this card isn't especially cheap, but it is sneaky. My favorite part about it is that it is untargeted creature kill. You target your creature to make the effect happen. Goodbye Phatom Centaur, Morphling, Multani, etc. Now, I'm curious how it interacts with Pro-Black/Green creatures, but my guess is that it would destroy them, just like Wrath of God destroys Pro-White creatures. I can't say that going play this card immediately (especially with cards like Putrefy available), but I will tip my cap on a well designed card.