Dragunity Knight - Trident [DT04-EN040] Ultra Rare Flaming Eternity When a face-up monster you

When a face-up monster you control is selected as an attack target

Set: Duel Terminal 4 Card type: Fusion/Effect Monster Rarity: Ultra Rare Attack: 2800 Defense: 2400 "Naturia Beast" + "Naturia Barkion" A Fusion Summon of this card can only be conducted with the above Fusion Material Monsters

except "Mermail Abysslinde"

Set: Destiny Soldiers Card type: Effect Monster Rarity: Secret Rare Attack: 2600 Defense: 2600 You can discard 2 other "Darklord" cards

then if this card was Set before activation and is on the field at resolution

Dragunity Knight - Trident [DT04-EN040] Ultra Rare Flaming Eternity When a face-up monster youSet: Duel Terminal 4 Card type: Synchro Effect Monster Rarity: Ultra Rare Attack: 2400 Defense: 1700 1 Dragon Type Tuner + 1 or more non Tuner Winged Beast Type monsters Once per turn, you can send up to 3 cards you control to the Graveyard to look at your opponent's Extra Deck and send the same number of cards you sent to the Graveyard.