Liam, Hogwarts Headmaster

+2: Creatures you control get +3+4 and trample until end of turn
-X: X is the number of creatures you control. You may search your deck or graveyard for August, Dark Art Teacher, or GG, Care of Magical Creatures
-10: You get an emblem with creatures you control get menace, deathtouch, lifelink, and if a creature does damage to a player it gains indestructible.