Name: Impervious Greatwurm Cost: 7GGG CMC: 10 Color: G CID: G Type: Creature -- Wurm Pow/Tgh: 16/16 Rules Text: 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.) Indestructible Set/Rarity: Guilds of Ravnica mythic, Double Masters 2022 rare Legality: Legal in timeless, Legal in modern, Legal in commander, Legal in penny, Legal in duel, Legal in pioneer, Legal in brawl, Legal in gladiator, Legal in historic, Legal in vintage, Legal in oathbreaker, Legal in legacy Price: $5.97 Foil price: $4.00