Siren's Call [Alpha Edition] Specter Whenever the chosen player casts

Whenever the chosen player casts a spell

Scourge of Kroog enters the battlefield tapped and doesn't untap during your untap step

Set: Antiquities Type: Artifact Creature — Wall Rarity: Uncommon Cost: {3} Defender (This creature can't attack

Anger chose a shell of boiling rock

Siren's Call [Alpha Edition] Specter Whenever the chosen player castsSet: 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.