Dumbledor

+4: Search your deck for Hogwarts and put it on the battlefield.If Hogwarts already is on the Battlefield then search for Harry Potter and Summon him
-5: Tap a Land,Destroy a Creature and Exile a card that is in a Players Graveyard
-20: Destroy this Planeswalker And You May Play All Cards on Your Hand and In your Graveyard For Free