Superdreadnought Rail Cannon Gustav Max [LART-EN018] Ultra Rare Storm of Ragnarok you can activate it once

you can activate it once as this card's effect

You can also Special Summon up to 2 "Nimble Momongas" from your Deck in face-down Defense Position

All Beast-Warrior-Type monsters you control gain 100 ATK

Set: Duel Terminal - Preview Card type: Normal Monster Rarity: Super Rare Attack: 3000 Defense: 2500

Superdreadnought Rail Cannon Gustav Max [LART-EN018] Ultra Rare Storm of Ragnarok you can activate it onceSet: 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.