الحصن الطائر سماء النار

This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except with the effect of "Summon Reactor・SK". Once per turn, you can send 1 card from your hand to the Graveyard to destroy 1 card your opponent controls. Once during each of your opponent's turns, you can activate 1 of the following effects:
● When your opponent Normal Summons or Special Summons a monster, destroy it and inflict 800 damage to your opponent.
● When your opponent Sets a card, destroy it and inflict 800 damage to your opponent.