In general, examining these items should give a highly technical, long, psuedo-scientific explanations.
Technomages used this power to make or break connections to their ships, staffs, places of power or other compatible technology.
Technomages can hurl fireballs.
This ability generates an invisible platform that can suspend items above the ground. With further abilities, mages can move and even ride on these platforms.
Through this technique, Technomages can establish real-time communication with another Technomage regardless of distance. While under the effect of this ability, the speakers consciousness is manifest within a sort of dreamscape in which time moves quickly enough for the participants to have whole conversations in the span of seconds. It is possible to establish contact with non-Technomages, but it is difficult.
Releases a cloud of nanite machines in the air that generate small holograms of shadow. The can be set to fade at a certain time and are organically inert. The energy they use generates sufficient heat to cloud infrared sensors as well as the visual spectrum and the metal of the nanites obscures radar in a similar way. The cannister is the size of a five cent coin.
Technomages can generate holograms like Alwynn's famous red-eyed, golden dragon or more complex holodemons, which can actually interact physically with their environment.
With practice a Technomage can cast a shield around their bodies to absorb damage or contain atmosphere in hostile environments. Isabelle was well known for her talent for shields.