Cloyster (34/149) [Sun & Moon: Base Set] 170 Set: Speed Duel: Duelists of

Set: Speed Duel: Duelists of Tomorrow Card type: Normal Trap Rarity: Common When an opponent's monster declares an attack

except "Number 71: Rebarian Shark"

When a monster(s) you control is targeted for an attack or by an opponent's card effect (except during the Damage Step): You can destroy all cards your opponent controls

This card cannot be Special Summoned except by the effect of "Horus the Black Flame Dragon LV6"

and during the End Phase of this turn

Cloyster (34/149) [Sun & Moon: Base Set] 170 Set: Speed Duel: Duelists ofSet: Sun & Moon: Base Set Type: Water Rarity: Rare Retreat cost: Colorless,Colorless,Colorless