Blightsteel Colossus [Mirrodin Besieged] Cat Soldier Spend this mana only to

Spend this mana only to cast artifact spells

Set: Aether Revolt Prerelease Promos Type: Sorcery Rarity: Mythic Cost: {X}{R}{R}{R} Destroy X target artifacts and/or creatures

Set: Ixalan Prerelease Promos Type: Creature — Merfolk Warrior Rarity: Rare Cost: {3}{U} Creatures you control with +1/+1 counters on them can't be blocked

A void as cryptic as reality itself

Set: Magic Origins Prerelease Promos Type: Creature — Hydra Rarity: Rare Cost: {2}{G} Trample

Blightsteel Colossus [Mirrodin Besieged] Cat Soldier Spend this mana only toSet: Mirrodin Besieged Type: Artifact Creature Phyrexian Golem Rarity: Mythic Cost: {12} Trample, infect, indestructible If Blightsteel Colossus would be put into a graveyard from anywhere, reveal Blightsteel Colossus and shuffle it into its owner's library instead.