Thunder End Dragon (Purple) [DL16-EN012] Rare Xyz Monster Set: Sun & Moon: Celestial

Set: Sun & Moon: Celestial Storm Type: Dragon Rarity: Uncommon Retreat cost: Colorless

you can send this card from your hand to the Graveyard to have that monster gain ATK equal to the ATK of the opponent's monster it is battling

but if you do

you can send 1 Reptile-type Worm monster from your Deck to the Graveyard

but destroy it during the End Phase of the next turn

Thunder End Dragon (Purple) [DL16-EN012] Rare Xyz Monster Set: Sun & Moon: CelestialSet: Duelist League Promo Card type: Xyz Effect Monster Rarity: Rare Attack: 3000 Defense: 2000 2 Level 8 Normal Monsters Once per turn: You can detach 1 Xyz Material from this card; destroy all other monsters on the field.