Siren's Call [Collectors' Edition] XY164 When this card is sent

When this card is sent from the hand to the Graveyard: Target 1 Flip Effect Monster in your Graveyard

"What weapon will you bear against one who's mastered them all

Set: Alpha Edition Type: Enchantment Rarity: Common Cost: {2}{B}{B} At the beginning of the end step

Set: Tempest Type: Enchantment Rarity: Rare Cost: {G} At the beginning of each player's precombat main phase

she never leaves her post

Siren's Call [Collectors' Edition] XY164 When this card is sentSet: 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.