Siren's Call [Beta Edition] Premodern As Breeding Pool enters the

As Breeding Pool enters the battlefield

Set: Morningtide Type: Enchantment Rarity: Rare Cost: {1}{G} Whenever a creature enters the battlefield under your control

or trample and reveal it

"The dragon wing of night o'erspreads the earth

Siren's Call [Beta Edition] Premodern As Breeding Pool enters theSet: 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.