Oko, Thief of Seasons

+2: Create a Food token. (It's an artifact with - "(2), Tap, Sacrifice this artifact: 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.