The Grim Knight

+1: the next time you would cast a spell this turn, choose an opponent at random, The grim knight deals damage to that player equal to the mana value
-2: reveal cards from the top of your library until you reveal a creature card,you may cast it,if you do exile a creature you control until it leaves
-6: You get an emblem with "whenever you cast your first spell each turn, you may exile it, if you do search for a spell with equal mana and cast it"