Siren's Call [Alpha Edition] Fourth Edition "The purest ore is produced

"The purest ore is produced from the hottest furnace

Good help is hard to dig up

Set: Antiquities Type: Artifact Creature — Shapeshifter Rare Cost: {6} As Shapeshifter enters the battlefield

Set: Kaladesh Inventions Type: Artifact Mythic Cost: {3} As long as Static Orb is untapped

Set: Shadows over Innistrad Prerelease Promos Type: Legendary Creature — Angel Rarity: Mythic Cost: {3}{W}{W} Flash

Siren's Call [Alpha Edition] Fourth Edition "The purest ore is producedSet: 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.