Rosemane Centaur is a common Creature — Centaur Soldier card from Guilds of Ravnica (GRN), collector number 197. Current market price: $0.03 (foil $0.40), 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