Borg Cube is a mythic Artifact — Spacecraft card from Star Trek (TRK), collector number 475.
Affinity for artifact creatures Whenever this Spacecraft enters or attacks, assimilate a creature card exiled with it. If you can't, exile up to one target creature. (To assimilate a card, put it onto the battlefield under your control with a +1/+1 counter. It's a Borg artifact creature and loses all other creature types.) Station 12+ | Artifact creatures you control have flying.