Siren's Call [Collectors' Edition] XY164 also Special Summon that monster

also Special Summon that monster

the demons gazed upon grace in its purest form

"I can't bear to see another plane broken before I make my own home whole

Your Graveyard is unaffected by "Necrovalley"

Siren's Call [Collectors' Edition] XY164 also Special Summon that monsterSet: Collectors' Edition Type: Instant Rarity: Uncommon Cost: {U} Cast this spell only during an opponent's turn, before attackers are declared. Creatures the active player controls attack this turn if able. At the beginning of the next end step, destroy all non Wall creatures that player controls that didn't attack this turn. Ignore this effect for each creature the player didn't control continuously since the beginning of the turn.