Yu-Gi-Oh Card Maker Wiki
Number X799: Nightmare Leviathan
Japan-flag.png Translated Cross Number 799: Nightmare Leviathan
Attribute Water Water.png
Type(s) [ Dragon/Xyz/Effect ]
Rank 6 18px-RankStar.svg.png18px-RankStar.svg.png18px-RankStar.svg.png18px-RankStar.svg.png18px-RankStar.svg.png18px-RankStar.svg.png
ATK / DEF 2500 / 2000
2 Level 6 Monsters

When this monster is destroyed (either by battle or card effect) and sent to the Graveyard: You can target 1 "Number 17: Leviathan Dragon" or "Number 47: Nightmare Shark"; Special Summon the target, and attach this card to the target as a Xyz Material. If this card is Summoned by the effect of "Rank-Cross-Magic ZEXAL Fusion": This card gains the following effects for each of the following monsters attached to it as Xyz Material:
● "Number 17: Leviathan Dragon": Once per turn, you can detach 1 Xyz Material from this card; this monster gains 500 ATK and loses 500 DEF.
● "Number 47: Nightmare Shark": Once per turn, you can detach 1 Xyz Material from this card to target 1 WATER monster you control; it can attack directly this turn, but other monsters cannot declare an attack.