Siren's Call [Beta Edition] Premodern before attackers are declared

before attackers are declared

before leading an army against the Shu

• Tap all creatures your opponents control

or trample and reveal it

Siren's Call [Beta Edition] Premodern before attackers are declaredSet: Beta 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.