Ossi, the Pretender

: Imprint - As an additional cost to cast Ossi, the Pretender, exile a creature from your hand. It is imprinted on this card.
+1: Until end of turn, Ossi becomes a copy of the creature imprinted on it, except it has haste and indestructible and has base power 1/1.
-6: Until end of turn, creatures you control become copies of the creature imprinted on Ossi.