Tribal Forcemage is a rare Creature — Elf Wizard card from Legions (LGN), collector number 142. Current market price: $0.56 (foil $33.38), TCGplayer market prices via Scryfall.
Morph {1}{G} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When this creature is turned face up, creatures of the creature type of your choice get +2/+2 and gain trample until end of turn.