Unesh, Criosphinx Sovereign [Hour of Devastation Prerelease Promos] Aura Curse the controller of the permanent

the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step

Exile Metallurgic Summonings: Return all instant and sorcery cards from your graveyard to your hand

He taught both boys to be strong and to lead

"This is a sacred duty

Unesh, Criosphinx Sovereign [Hour of Devastation Prerelease Promos] Aura Curse the controller of the permanentSet: Hour of Devastation Prerelease Promos Type: Legendary Creature Sphinx Rarity: Mythic Cost: {4}{U}{U} Flying Sphinx spells you cast cost {2} less to cast. Whenever Unesh, Criosphinx Sovereign or another Sphinx enters the battlefield under your control, reveal the top four cards of your library. An opponent separates those cards into two piles. Put one pile into your hand and the other into your graveyard.