"There is as much power in winter's chill as in summer's warmth."

Jumpstart 2022

Coldsteel Heart

Coldsteel Heart enters the battlefield tapped.
As Coldsteel Heart enters the battlefield, choose a color.
{T}: Add one mana of the chosen color.

Coldsteel Heart enters tapped.
As Coldsteel Heart enters, 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.

Double Masters 2022

Historic Anthology 4

The List

Commander Anthology Volume II

Commander 2015

Coldsteel Heart enters the battlefield tapped.
As Coldsteel Heart enters the battlefield, choose a color.{T}: Add one mana of the chosen color to your mana pool.

Coldsnap

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.