Name: Mysterious Egg Cost: 1 CMC: 1 Color: CID: Type: Creature -- Egg Pow/Tgh: 0/2 Rules Text: Whenever this creature mutates, put a +1/+1 counter on it. Set/Rarity: Magic Online Promos common, Ikoria: Lair of Behemoths common Set Code: PRM-C, IKO-C Legality: Legal in penny, Legal in duel, Legal in modern, Legal in historic, Legal in oathbreaker, Legal in legacy, Legal in pauper, Legal in brawl, Legal in competitivebrawl, Legal in commander, Legal in paupercommander, Legal in gladiator, Legal in vintage, Legal in pioneer, Legal in timeless Price: $0.23 Foil price: $0.43