Houndoom (H11/H32) [Aquapolis] Dinosaur Must be Ritual Summoned without

Must be Ritual Summoned without using "Nekroz of Brionac"

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

While you control another "Number" Xyz Monster

Set: Strike of Neos Card type: Effect Monster Rarity: Ultimate Rare Attack: 900 Defense: 300 If this card attacks or is attacked by an opponent's monster you can return both monsters to their owner's hands at the start of the Damage Step (without damage calculation)

Fire Rarity: Ultra Rare Retreat cost: 1

Houndoom (H11/H32) [Aquapolis] Dinosaur Must be Ritual Summoned withoutSet: Aquapolis Type: Darkness Rarity: Rare Retreat cost: Colorless