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 gladiator, Legal in oathbreaker, Legal in brawl, Legal in modern, Legal in penny, Legal in timeless, Legal in duel, Legal in historic, Legal in pioneer, Legal in vintage, Legal in commander, Legal in legacy Price: $0.30 Foil price: $0.37