Thranduil's Decree

Counter target spell. If a permanent spell is countered this way, exile it instead of putting it into its owner's graveyard. You may cast that card without paying its mana cost for as long as it remains exiled.

"I have a right to know what brings you here, and if you will not tell me now, I will keep you all in prison until you have learned sense and manners!"

Format legality