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 Legality: Legal in timeless, Legal in legacy, Legal in pioneer, Legal in oathbreaker, Legal in vintage, Legal in commander, Legal in duel, Legal in gladiator, Legal in historic, Legal in modern, Legal in brawl Price: $0.04 Foil price: $0.10