Twilight's Fall – a separate game. Twilight Imperium's expansions, mods and rules topics are not part of it.

Illusory Duplication

At the start of a space combat round: Each of your non-fighter ships in the active system that does not have SUSTAIN DAMAGE gains that unit ability this combat round.
Action card

At the start of a space combat round:

Each of your non-fighter ships in the active system that does not have SUSTAIN DAMAGE gains that unit ability this combat round.

1in the deck
–chance to draw
Nocomponent action

Source: Uncharted Space