Oko, the Trickster is a mythic Legendary Planeswalker — Oko card from Throne of Eldraine (ELD), collector number 309. Current market price: $0.57 (foil $1.34), TCGplayer market prices via Scryfall.
+1: Put two +1/+1 counters on up to one target creature you control. 0: Until end of turn, Oko becomes a copy of target creature you control. Prevent all damage that would be dealt to him this turn. −7: Until end of turn, each creature you control has base power and toughness 10/10 and gains trample.