Necrovalley [AP04-EN003] Ultimate Rare Animal Kingdom Pirates You can only use this

You can only use this effect of "Live Twin Ki-sikil Frost" once per turn

While face-up on the field

While "The Sanctuary in the Sky" is on the field and your Life Points are higher than your opponent's

Set: Phantom Darkness Card type: Effect Monster Rarity: Ultra Rare Attack: 2800 Defense: 2200 Once per turn

And with the coming of this horror

Necrovalley [AP04-EN003] Ultimate Rare Animal Kingdom Pirates You can only use thisSet: Astral Pack 4 Card type: Field Spell Rarity: Ultimate Rare Attack: 0 Defense: 0 All "Gravekeeper's" monsters gain 500 ATK and DEF. Cards in either player's Graveyard cannot be banished. Negate any card effect that would move a card in the Graveyard, other than itself, to a different place.