Heat, a spell of the Ta-Ree variety, was a power available to Ascendants residing on the world of Kathol. Its function was to accelerate the molecular vibration within solid matter, which resulted in the creation of heat. One application of this spell was to imbue hand-held weapons and protective gear with intense heat, potentially forcing adversaries to discard or shed them. Individuals with exceptional skill could even employ this ability to completely burn an object. Mastery of the psychokinesis spell was a prerequisite for Ascendants to utilize the heat spell.