Kalecgos is the first boss in the Sunwell Plateau raid. This highly technical fight takes place in two different realms at the same time. In the normal realm the players face Kalecgos the dragon, while in the spectral realm Sathrovarr the Corruptor and Kalec, Kalecgos' half-elf form, fight for control over the dragon. The battle is won when Sathrovarr and the dragon are both subdued, and it is lost when Sathrovarr kills Kalec. Roughly every 30 seconds, an opportunity presents itself for players to change realm. A solid rotation has to be worked out on who switches when to the spectral realm. Even after the HP reduction of Patch 3.0.2, Kalecgos is not a trivial fight.