Name: Corrosive Mentor Cost: 2B CMC: 3 Color: B CID: B Type: Creature -- Elemental Rogue Pow/Tgh: 1/3 Rules Text: Black creatures you control have wither. (They deal damage to creatures in the form of -1/-1 counters.) Set/Rarity: Shadowmoor uncommon Set Code: SHM-U Legality: Legal in modern, Legal in vintage, Legal in duel, Legal in oathbreaker, Legal in commander, Legal in predh, Legal in legacy Price: $6.75 Foil price: $17.87