Arch-Lich Acererak

The first time you cast a spell named Arch-Lich Acererak, secretly choose an artifact you control.
Menace
When Acererak dies, return him to your hand at the beginning of the next end step.
When the chosen artifact leaves the battlefield, exile all cards named Arch-Lich Acererak from your graveyard, hand, battlefield, and library.