Name: Collective Nightmare Cost: 2B CMC: 3 Color: B CID: B Type: Instant 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.) Target creature gets -3/-3 until end of turn. Set/Rarity: March of the Machine uncommon Set Code: MOM-U Legality: Legal in vintage, Legal in legacy, Legal in duel, Legal in historic, Legal in gladiator, Legal in pioneer, Legal in oathbreaker, Legal in timeless, Legal in brawl, Legal in commander, Legal in modern Price: $0.16 Foil price: $0.09