Gruul Guildmage is a uncommon Creature — Human Shaman card from Ravnica Remastered (RVR), collector number 189. Current market price: $0.26 (foil $0.25), TCGplayer market prices via Scryfall.
({R/G} can be paid with either {R} or {G}.) {3}{R}, Sacrifice a land: This creature deals 2 damage to target player or planeswalker. {3}{G}: Target creature gets +2/+2 until end of turn.