Siren's Call [Alpha Edition] SM49 Set: EX: Unseen Forces Type:

Set: EX: Unseen Forces Type: Psychic Rarity: Ultra Rare Retreat cost: 0

If this card has "Number 105: Battlin' Boxer Star Cestus" as an Xyz Material

Set: Base Set Shadowless Unlimited Type: Water Rarity: Uncommon Retreat cost: Colorless

OR: Unequip this card and Special Summon it in face-up Attack Position

While you have no monsters in your Graveyard

Siren's Call [Alpha Edition] SM49 Set: EX: Unseen Forces Type:Set: 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.