Storm armor

Storm armor was a type of magical, glassteel full plate armor, granted to those who had achieved full-fledged knighthood within the order of the Flying Hunt. They were specially attuned to each individual wearer, and would be useless to defend anyone

Origins
The knowledge of how to craft a set of storm armor was only known to the Nimbral Lords and a select few powerful mages from the realm of Halruaa. As it was bestowed upon recognized knights by the enigmatic lords of the island-nation, it was not available by any other means.

Powers
This set of +1 invulnerable, glassteel full plate mail was resistant to electricity, whether magic or mundane in nature. Storm armor also functioned similarly to a ring of feather falling, in that it prevented serious injury death from taking a fall from great heights.