Superdreadnought Rail Cannon Gustav Max (JUMP-EN062) [Shonen Jump Magazine Promos] Starfoil Rare This card gains ATK equal

This card gains ATK equal to the equipped card''s ATK

If Rocket's Moltres ex has any Darkness Energy attached to it

If this card is destroyed in battle you can select 1 Spellcaster-Type monster Level 2 or lower from your Deck and Special Summon it on the field in face-down Defense Position

FS-JM1 Joe Mack

Superdreadnought Rail Cannon Gustav Max (JUMP-EN062) [Shonen Jump Magazine Promos] Starfoil Rare This card gains ATK equalNumber: JUMP EN062 Rarity: Ultra Rare Attribute Monster Type Card Type: EARTH Machine Xyz Effect Monster Level: 10 A D: 3000 3000 Description: 2 Level 10 monsters Once per turn: You can detach 1 Xyz Material from this card; inflict 2000 damage to your opponent.