Siren's Call [Alpha Edition] Tempest you may destroy target artifact

you may destroy target artifact

We encountered a valley topped with immense boulders and eerie rock formations

Set: Unlimited Edition Type: Sorcery Rarity: Rare Cost: {2}{R} Each player discards their hand

Even as humans regained the upper hand

Siren's Call [Alpha Edition] Tempest you may destroy target artifactSet: 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.