Gempalm Avenger is a common Creature — Human Soldier card from Legions (LGN), collector number 14. Current market price: $0.22 (foil $0.46), TCGplayer market prices via Scryfall.
Cycling {2}{W} ({2}{W}, Discard this card: Draw a card.) When you cycle this card, Soldier creatures get +1/+1 and gain first strike until end of turn.