|Number 66: Legendary Diaboros|
|Type(s)||[ Fiend/Xyz/Effect ]|
|ATK / DEF||2500 / 0|
Lore2 Level 5 DARK Monsters
This card cannot be destroyed by card effects. Once per turn, when this card attacks: You can detach 1 Xyz Material from this card; Increase the ATK of this card by 1000 until the end of the Battle Phase. If this card has no Xyz Materials: Halve the ATK of this card.