Aven Interrupter (OTJ-309) - Outlaws of Thunder Junction: (Extended Art) Foil [Rare]

Flash
Flying
When Aven Interrupter enters the battlefield, exile target spell. It becomes plotted. (Its owner may cast it as a sorcery on a later turn without paying its mana cost.)
Spells your opponents cast from graveyards or from exile cost more to cast.