Assimilation Aegis is a mythic Artifact — Equipment card from Outlaws of Thunder Junction Promos (POTJ), collector number 192s. Current market price: — (foil $1.53), TCGplayer market prices via Scryfall.
When this Equipment enters, exile up to one target creature until this Equipment leaves the battlefield. Whenever this Equipment becomes attached to a creature, for as long as this Equipment remains attached to it, that creature becomes a copy of a creature card exiled with this Equipment. Equip {2}