Superdreadnought Rail Cannon Gustav Max [RA04-EN063] Quarter Century Secret Rare WTR153-C Base Rarity: Marvel Class: Mechanologist

Base Rarity: Marvel Class: Mechanologist Cost: 0 If you have a base head equipped

Set: Hidden Arsenal 7: Knight of Stars Card type: Xyz/Effect Monster Rarity: Secret Rare Attack: 2700 Defense: 2000 2 Level 6 monsters You can also Xyz Summon this card by using a "Constellar" Xyz Monster you control as the Xyz Material

That monster's ATK is halved

also it can activate the 2nd effect listed above as if it were "Therion "King" Regulus"

Set: Crossroads of Chaos Card type: Effect Monster Rarity: Ultimate Rare Attack: 2800 Defense: 2600 You can Tribute 1 face-up Plant-Type monster you control to negate the activation of a Spell

Superdreadnought Rail Cannon Gustav Max [RA04-EN063] Quarter Century Secret Rare WTR153-C Base Rarity: Marvel Class: MechanologistSet: Quarter Century Stampede Card type: Xyz Effect Monster Rarity: Quarter Century Secret Rare 2 Level 10 monstersOnce per turn: You can detach 1 material from this card; inflict 2000 damage to your opponent.