Siren's Call [Limited Edition Beta] Pioneer Set: Sun & Moon: Black

Set: Sun & Moon: Black Star Promos Type: Fairy Rarity: Black Star Promo Retreat cost: Colorless

Set: Black & White: Dragons Exalted Type: Grass Rarity: Rare Retreat cost: Colorless

Enchanted Wall can attack as though it didn't have defender

Set: EX: Dragon Frontiers Type: Water Rarity: Common Retreat cost: Colorless

Set: Sword & Shield: Vivid Voltage Type: Supporter Rarity: Secret Rare

Siren's Call [Limited Edition Beta] Pioneer Set: Sun & Moon: BlackSet: Limited Edition Beta 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.