Sleeper, Shifting Adept

+1: Until your next turn, target creature you control becomes a 3/3 green and blue Symbiote Beast with trample, vigilance, and indestructible.
-2: Target creature you control becomes a copy of another target creature you control until end of turn
-7: You get an emblem with "Whenever you cast a creature spell, create a token copy, except it's a Symbiote Beast in addition to it's other types.