Siren's Call [Alpha Edition] Izzet Set: Sun & Moon: Unified

Set: Sun & Moon: Unified Minds Type: Metal Rarity: Ultra Rare Retreat cost: Colorless

you may put that card on the bottom of your library

Set: Base Set Unlimited Type: Lightning Rarity: Common Retreat cost: Colorless

Set: EX: Deoxys Type: Water Rarity: Holo Rare Retreat cost: Colorless

Set: Double Masters Type: Artifact Rarity: Rare Cost: {2} Whenever a permanent becomes untapped

Siren's Call [Alpha Edition] Izzet Set: Sun & Moon: UnifiedSet: Alpha 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.