Thermal lance

Thermal lances are a protoss weapon developed by the Protoss Empire for the colossus. They fire two superheated streams of plasma that incinerate groups of ground targets. These streams are targeted by an onboard AI, as well as gravity sensitive gyroscopes.

Due to the limited range of the lances, Khalai phase-smiths built an extended thermal lance with enhanced airflow that could operate at higher temperatures, increasing beam velocity and effective range without sacrificing energy output.