Cabal Thresher

The Cabal Thresher is a Cabal ship that flies in to attack during the Cabal Excavation public event, which takes place in the European Dead Zone, Nessus, Io, Mars and Neptune. It arrives when the Overriding Lander reaches about 30 to 40 percent progress and makes two passes over the excavation before leaving, so there are two chances to shoot it down.

Destroying the Thresher turns the event heroic. The Excavation Valus boss then arrives and must be defeated to complete the event. The boss's name appears as Excavator Valus in most locations and as Excavation Valus on Neptune.