Coldsteel Heart (Snowflake)

Coldsteel Heart enters the battlefield tapped.
As Coldsteel Heart enters the battlefield, choose a
color.
{t}: Gain one mana of your chosen color to your
mana pool.
Sarah's AMAAAZING and incredibly USEFUL XMAS gift 2017 to really show him how much she cared about him, too! Even it was a little late-- the best things in life take the longest to arrive! < 3