flavorText: The Phyrexian death machine awoke, its coldsteel heart imbuing it with sinister new power.
name: Coldsteel Heart
originalText: Coldsteel Heart comes into play tapped.
  As Coldsteel Heart comes into play, choose a color.
  {T}: Add one mana of the chosen color to your mana pool.
printings: 2X2, C15, CM2, CSP, HA4, J22, PLST
text: This artifact enters tapped.
  As this artifact enters, choose a color.
  {T}: Add one mana of the chosen color.
type: Snow Artifact