Acererak the Archlich (Rainbow Foil) [Secret Lair Drop Series]

Description:

When Acererak the Archlich enters, if you haven't completed Tomb of Annihilation, return Acererak the Archlich to its owner's hand and venture into the dungeon.
Whenever Acererak the Archlich attacks, for each opponent, you create a 2/2 black Zombie creature token unless that player sacrifices a creature. Dungeon Master's Guide, *5th Edition (2014)*