Name: Invasion of Karsus Cost: 2RR CMC: 4 Color: R CID: R Type: Battle -- Siege Rules Text: (As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.) When this Siege enters, it deals 3 damage to each creature and each planeswalker. [Front face. Transforms into Refraction Elemental.] Set/Rarity: March of the Machine rare, March of the Machine Promos rare Set Code: MOM-R, PMOM-R Legality: Legal in penny, Legal in commander, Legal in timeless, Legal in historic, Legal in modern, Legal in pioneer, Legal in duel, Legal in gladiator, Legal in legacy, Legal in oathbreaker, Legal in vintage, Legal in brawl Price: $0.33 Foil price: $0.35