Xion Transport Hub

You can't have a second copy on board.

In your own watch, while this card is in your scrapyard, you may pay this to return it to your hand. No one can react, and there is no limit per turn (802.2d).

Exhaust it to use it. After dispatch, choose one battle where you have Mercenaries and/or Engineers, 1 to 3 of them there, and where they go: the mothership battle or any expedition on board, with crew or not, but not the battle they are in. A crew goes only where it could have been dispatched this turn: not to the mothership battle in the turn it came on board with Outrider, and not where a ban keeps it out. As this resolves, the chosen crew still in that battle move, and fight in the battle step where they are now. They stay exhausted, and it isn't a dispatch. Moved out of a battle before a card that hits it resolves, they aren't hit (703.9). Only in the sortie phase; it goes into the crossfire. A base can use it in the turn it comes on board (307.4).