Superdreadnought Rail Cannon Gustav Max [LART-EN018] Ultra Rare 263 the selected card can attack

the selected card can attack as many times as the number of monster(s) on your side of the field when this card resolves

Set: Phantom Darkness Rarity: Ultra Rare After activation

you can discard this card

when your opponent activates a Spell/Trap Card during your Battle Phase

While this card is face-up on the field

Superdreadnought Rail Cannon Gustav Max [LART-EN018] Ultra Rare 263 the selected card can attackSet: The Lost Art Promotion Card type: Xyz Effect Monster Rarity: Ultra Rare Attack: 3000 Defense: 3000 2 Level 10 monsters Once per turn: You can detach 1 Material from this card; inflict 2000 damage to your opponent.