Siren's Call [Beta Edition] Pioneer Set: Kaladesh Prerelease Promos Type:

Set: Kaladesh Prerelease Promos Type: Enchantment Rarity: Mythic Cost: {3}{U}{U} Whenever you cast an instant or sorcery spell

You may have that player lose that much life

In ice there is perfect tranquility

Set: Beta Edition Type: Instant Rarity: Uncommon Cost: {U} Cast this spell only during an opponent's turn

If any creatures with banding you control are blocking or being blocked by a creature

Siren's Call [Beta Edition] Pioneer Set: Kaladesh Prerelease Promos Type:Set: 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.