Reiver Demon [Mirrodin] XY68 then if your opponent controls

then if your opponent controls a monster that was Special Summoned from the Extra Deck

"Defiantly

Destroy each permanent completely covered by those cards

Set: Antiquities Type: Enchantment Rarity: Uncommon Cost: {G}{G} Whenever an artifact an opponent controls becomes tapped or an opponent activates an artifact's ability without {T} in its activation cost

Psychic Rarity: Promo Retreat cost: Colorless

Reiver Demon [Mirrodin] XY68 then if your opponent controlsSet: Mirrodin Type: Creature Demon Rarity: Rare Cost: {4}{B}{B}{B}{B} Flying When Reiver Demon enters the battlefield, if you cast it from your hand, destroy all nonartifact, nonblack creatures. They can't be regenerated.