Unicomplex

It's the Borg Headquarters... well, sort of.

The Unicomplex is categorized as an outpost in the game for a number of reasons: (1) it's a space-based facility and all other headquarters have been planet-based; (2) an outpost gives 50% added SHIELDs protection to docked ships, keeping those Borg ships with point boxes safe from attack by the Hirogen and Kazon; and (3) you can seed a Spacedoor on an outpost to download a universal ship, something that can't be done at a Headquarters.

Just like the Borg Outpost, the Unicomplex seeds at any Delta-quadrant space mission with no affiliation icons. Through the Borg expansion there are seven such missions to choose from. By using either the Interlink Drone (Nine of Eleven) or a Borg Vinculum you'll be able to scout the mission while skill-sharing even though the majority of your Borg are safely aboard your facility - away from the nasty Species 8472 dilemmas.

Let's get to the special game text on this outpost:
Once each turn, Borg Queen OR one unique drone OR one unique ship may report for free here.

In the First Contact expansion, there were two unique ships, the Queen's Borg Sphere and the Queen's Borg Cube. The Blaze of Glory expansion added Locutus' Borg Cube, while Trouble with Tribbles got us our first black-bordered unique drone, Third of Five. The Borg expansion literally bubbles over with unique drones and unique ships. There's another ship for the Queen to command. The five "Borg children" appear as unique drones, while Seven of Nine makes her official appearance in an expansion, along with former unimatrix partners Two of Nine, Three of Nine, and Four of Nine.

You'll now be able to stack your deck with a lot of unique ships and drones. And with the new Borg Queen, you'll be able to use your normal card play to get a Event or Interrupt and then still play a unique Borg drone or ship to the Unicomplex. Pretty nice, huh?

Finally, did I mention its SHIELDs of 74? Hey, attack decks, try and blow this thing up... yeah, I didn't think so!