Guardian of Vitu-Ghazi is a common Creature — Elemental card from Ravnica: City of Guilds (RAV), collector number 212. Current market price: $0.16 (foil $0.32), TCGplayer market prices via Scryfall.
Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Vigilance