Malefus, Illithid Artisan

When Malefus enters, return target creature card from an opponent's graveyard to the battlefield under your control.

Whenever a creature enters from a graveyard, it loses all card types, becomes an artifact equipment, and has "Equipped creature gains all activated and triggered abilities of this card", and "Equip horror: {1}".

"A life-changing invention."—Grazilaxx