Simic Manipulator is a rare Creature — Mutant Wizard card from Gatecrash (GTC), collector number 50. Current market price: $0.44 (foil $1.01), TCGplayer market prices via Scryfall.
Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.) {T}, Remove one or more +1/+1 counters from this creature: Gain control of target creature with power less than or equal to the number of +1/+1 counters removed this way.