The awesome capital ship from Starcraft returns in Starcraft 2, only with more awesomeness. It has a large hit-point pool, large damage, heavy armor and a wide range of customization options. To build Battlecruisers you need a Starport with a Tech Lab and a Fusion Core.
It can be fitted with a Yamato Cannon, a Defensive Matrix or Missile Pods. The Yamato Cannon can be used to nuke a single unit just like in Starcraft, the Defensive Matrix to absorb 200 damage when cast and Missile Pods to destroy air units. You can only have 1 upgrade though.
