Morrigan, Wild Apostate

Changeling, Hexproof

When Morrigan, Wild Apostate enters the battlefield, it gains {x} Mana Counters equal to the amount of mana used to cast it. Instants and Sorceries with an {x} cost, cost {x} less equal to the amount of Mana Counters on Morrigan, Wild Apostate.

Proliferate - {2}{u}{b}{g}