Number 17: Leviathan Dragon [GENF-EN039] Ghost Rare Build & Battle Set: Galactic Overlord Card type:

Set: Galactic Overlord Card type: Xyz/Effect Monster Rarity: Ultimate Rare Attack: 2800 Defense: 2100 3 Level 4 monsters Once per turn

This card gains 500 ATK for each face-up WATER monster on the field

Set: Tournament Promotion Cards Era: Garlic Jr

Book III in The Horus Heresy series

you can remove from play 1 Plant-Type monster from your Graveyard to change 1 monster your opponent controls to face-up Attack Position

Number 17: Leviathan Dragon [GENF-EN039] Ghost Rare Build & Battle Set: Galactic Overlord Card type:Set: Generation Force Card type: Xyz Effect Monster Rarity: Ghost Rare Attack: 2000 Defense: 0 2 Level 3 monsters Once per turn: You can detach 1 Xyz Material from this card, this card gains 500 ATK. If this card has no Xyz Materials, it cannot attack your opponent directly.