Entity, Ender of Reality.

: X is the amount of Killer Cards and Entity cards left in your deck.
+2: Draw a card. If it is a Creature, Target Plainswalker and send it to the Graveyard. If not play it for half it's converted mana cost.
-7: Discard your hand. Target 3 exiled cards, shuffle them into your library. Target 3 cards in your opponents hand and exile them.