Mirrodin's Core

Land
{T}: Add {1} to your mana pool.
{T}: Put a charge counter on Mirrodin's Core.
{T}, Remove a charge counter from Mirrodin's Core: Add one mana of any color to your mana pool.¹
Illus. Greg Staples

Format Legality	Legal in Vintage, Legacy, Extended Banned in Standard
Printings (1/8)	Darksteel (Uncommon)