Crowley, The Propheseer

: Warlock and Wizard creatures you control enter the battlefield with a +1/+1 counter.
+1: Search your Library for 3 cards with 'Spellbook' in the name. Randomly add 1 to your hand, and shuffle the rest into your deck.
-3: Cast a Wizard or Warlock creature from your hand with CMC 5 or less without paying the mana cost.