Ke'avuur valued might and control. He would share his power willingly with those who would pass his trial: quelling the flames of a volcano. Several miles away from Ke'avuur was the closest volcano: a massive outcropping of obsidian which constantly erupted lava out of the top. This mountain was protected by an Aspect of Fire, and it's energy was shared by a Sunlight Nexus. Upon their defeat and successfully slowing, diverting, or stopping the lava eruption, the champion(s) would receive Ke'avuur's respect and be granted the power of a Primordial Shard of Fire from his core.
Successful attribution of her power and slowing the inflow of energy to Ke'avuur leads to him stirring: he would shrink in size slightly and his eye would grow wide and alert, leading to a cooling of the lava below him and an increased stillness in the region. In Al'tehrun, this would lead to extreme energy surges: more volatile temperatures, increased wildfires, and more powerful volcano eruptions.