Siren's Call [Fourth Edition] Leviathan Set: Tenth Edition Type: Enchantment

Set: Tenth Edition Type: Enchantment Rarity: Rare Cost: {1}{W}{W} Creatures you control get +1/+1

If you win the flip

Set: Apocalypse Type: Creature — Angel Rarity: Rare Cost: {3}{B}{B} Kicker {W}{W} (You may pay an additional {W}{W} as you cast this spell

inadvertently granting another layer of defense

Siren's Call [Fourth Edition] Leviathan Set: Tenth Edition Type: EnchantmentSet: Fourth 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.