Graceful Antelope is a rare Creature — Antelope card from Odyssey (ODY), collector number 24. Current market price: $0.28 (foil $3.81), TCGplayer market prices via Scryfall.
Plainswalk (This creature can't be blocked as long as defending player controls a Plains.) Whenever this creature deals combat damage to a player, you may have target land become a Plains until this creature leaves the battlefield.