On Aelion there once existed special parties of adepts who traveled to the most inaccessible places. They had to dive into strange worlds and open up new paths for exploration and amazing discoveries.
For the members of these parties special suits were devised: cloak made of fabric that was proof against toxins and poisons and reacted to changes in the biofield, a headwear with faceted lenses and an enhanced sensory system, inspired by the structure of a Winger's head, that allowed to trace the smallest movements and thermal bursts of Phytonides, and the costume itself, light as a feather but designed to withstand all stresses, allowing its owner to survive under all conditions, from the Antirius's cave to Thea. These costumes and technologies were lost, but rumors say adepts visited strange places where such things could be found. Anyway, for one reason or another, no one managed to seize these items.
Still, maybe, someone's adepts will be able to get to these, who knows?