Oko, Thief of Crowns

+2: Create a Food token. (It's an artifact with "2, T, Sacrifice this token: You gain 3 life.")

+1: Target artifact or creature loses all abilities and becomes a green Elk creature with base power and toughness 3/3.

−5: Exchange control of target artifact or creature you control and target creature an opponent controls with power 3 or less.