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 Promos rare, March of the Machine rare Set Code: PMOM-R, MOM-R Legality: Legal in pioneer, Legal in duel, Legal in commander, Legal in oathbreaker, Legal in historic, Legal in gladiator, Legal in legacy, Legal in penny, Legal in modern, Legal in timeless, Legal in vintage, Legal in brawl Price: $0.31 Foil price: $0.35