Mina and Denn, Wildborn is a rare Legendary Creature — Elf Ally card from Oath of the Gatewatch (OGW), collector number 156. Current market price: $1.82 (foil $3.19), TCGplayer market prices via Scryfall.
You may play an additional land on each of your turns. {R}{G}, Return a land you control to its owner's hand: Target creature gains trample until end of turn.