Thad Samuelson

-3: Put X loyalty counters on Thad Samuelson where X is the combined power of all creatures you control.
-5: Search your library for a creature card, put it into your hand. Shuffle your library. Creature spells cost X less where X is Thad's loyalty.
-20: Gain control of all creatures target player controls all creatures you control gain haste and trample until end of turn, Untap those creatures.