Superdreadnought Rail Cannon Gustav Max [MGED-EN064] Rare Aqua Once per turn (Quick Effect):

Once per turn (Quick Effect): You can target 1 Set Spell/Trap you control

Set: Legendary Duelists: Sisters of the Rose Card type: Xyz/Effect Monster Rarity: Rare Attack: 3000 Defense: 3000 2 Level 10 monsters Once per turn: You can detach 1 Xyz Material from this card

it is able to integrate its attacks

Dragon Ruler of Boulders" from your Deck

Superdreadnought Rail Cannon Gustav Max [MGED-EN064] Rare Aqua Once per turn (Quick Effect):Set: Maximum Gold: El Dorado Card type: Xyz Effect Monster Rarity: 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.