Pay 2 Force Evade 2
When Vader's TIE Fighter is discarded from the Character arena, you may pay 2 Force. If you do, return Vader's TIE Fighter and all cards stacked with it, and its Pilot, if any, from your discard pile to your hand.
If some of the cards have left the discard pile by the time the second ability takes effect, you don't get them back in your hand.
Vader's TIE Fighter (A) retrieves all cards that were part of its stack and Equipment. It does not re-attach Equipment that was detached when it was discarded or any cards put face down under it.
Cards under Vader's TIE Fighter (A) that you do not own do not return to your hand, but remain in your opponent's discard pile as per the Global Zone Rule.
If the Light Side player controls Vader's TIE Fighter (A), then the Light Side may pay the 2 Force. However, Vader's TIE Fighter won't be in the Light Side discard pile when the effect resolves. Therefore, neither side will retrieve Vader's TIE Fighter.