Coldsteel Heart [Commander 2015] Merfolk Rogue the wurm's spines gathered up

the wurm's spines gathered up bits of flowstone

Set: Visions Type: Land Rarity: Uncommon {T}: Add {C}

or sorcery card with mana value less than or equal to the number of colors of mana spent to cast this spell

Just hope yours isn't full of coal golems

it loses indestructible until end of turn

Coldsteel Heart [Commander 2015] Merfolk Rogue the wurm's spines gathered upSet: Commander 2015 Type: Snow Artifact Rarity: Uncommon Cost: {2} Coldsteel Heart enters the battlefield tapped. As Coldsteel Heart enters the battlefield, choose a color. {T}: Add one mana of the chosen color. The Phyrexian death machine awoke, its coldsteel heart imbuing it with sinister new power.