Siren's Call [Alpha Edition] Atog Set: Classic Sixth Edition Type:

Set: Classic Sixth Edition Type: Creature — Bird Rarity: Rare Cost: {G} Flying

Set: HarperPrism Book Promos Type: Artifact Rarity: Rare Cost: {0} At the beginning of your upkeep

I simply open it up and look

(You can't gain or lose life

This effect lasts indefinitely

Siren's Call [Alpha Edition] Atog Set: Classic Sixth Edition Type:Set: Alpha 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.