Siren's Call [Beta Edition] Oldschool Activate only during your upkeep

Activate only during your upkeep

In fire there is the spark of chaos and destruction

If it's a land card

In ice there is perfect tranquility

Siren's Call [Beta Edition] Oldschool Activate only during your upkeepSet: 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.