Emerald Medallion (Foil)

Rulings

If a spell you cast has {X} in its mana cost, you choose the value of X before calculating the spell's total cost. — If there are additional costs to cast a spell, or if the cost to cast a spell is increased by an effect (such as the one created by Thalia, Guardian of Thraben's ability), apply those increases before applying cost reductions. — The ability can't reduce the amount of colored mana you pay for a spell. It reduces only the generic mana component of that cost. — The ability doesn't change the mana cost or mana value of any spell. It changes only the total cost you pay. — The cost reduction can apply to alternative costs such as flashback costs.