Number 17: Leviathan Dragon [SP13-EN023] Starfoil Rare Mythical Dragon Your Graveyard is unaffected by

Your Graveyard is unaffected by "Necrovalley"

you can Special Summon up to 2 "Destiny HERO" monsters from your GY

[Your Turn] When this Digimon becomes unsuspended during your unsuspend phase

Set: 2010 Duelist Pack Collection Tin Card type: Normal Spell Rarity: Super Rare Attack: 0 Defense: 0 Send 1 Monster Card from your hand to the Graveyard

also it cannot be destroyed by battle

Number 17: Leviathan Dragon [SP13-EN023] Starfoil Rare Mythical Dragon Your Graveyard is unaffected bySet: Star Pack 2013 Card type: Xyz Effect Monster Rarity: Starfoil 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 Material, it cannot attack your opponent directly.