The mothership core is a unit in StarCraft II: Heart of the Swarm which has undergone much development. The mothership core was created to solve the problem of multiplayer protoss vs. protoss games, said games rarely going to mid-late game due to the warp-in abilities negating the defender's advantage. Its Photon Overcharge ability is a counter to this, along with countering zerg rush techniques. It is also intended that its Recall abilities will allow protoss players to be more aggressive. Prior to the beta test, the mothership core was immobile, remaining atop the nexus. v • e