Eon Frolicker is a rare Creature — Elemental Otter card from Commander 2020 (C20), collector number 33. Current market price: $0.49, TCGplayer market prices via Scryfall.
Flying When this creature enters, if you cast it, target opponent takes an extra turn after this one. Until your next turn, you and planeswalkers you control gain protection from that player. (You and planeswalkers you control can't be targeted, dealt damage, or enchanted by anything controlled by that player.)