The Pierce-Eye

When The Pierce-Eye enters the battlefield, you may choose to exile a card you control

{t}: Add {c}

{1}{t}: Add {x} mana of any color where {x} is the mana value of the card you exiled this way


"This particular beast is known as “the Pierce-Eye”, ever since it was skewered with titanic Mortis Stones dropped from the fortress high above."