Iln-axa

"Endless light, endless time. I honestly don't know how to describe it. I've... never been." 
-Axel Navath 
Iln-axa is a divine plane located within Solaxis, in the Annaadusphere. It is an endlessly shifting plane of light and energy, as well as the homeland of the angels. Inaccessible to all non-angels without an invitation, it is considered to be one of the most exclusive realms in Annaad. There is a reason for this exclusivity, however. 
Angels are among the most durable of the Arkonic people, and destroying an angel's physical form is a challenge in-of-itself, but if an angel's physical form is destroyed, its true form can craft a new body, which will eventually return to the world. The only way to fully kill an angel is to find its true form in Iln-axa, and kill it there. In order to ensure their survival, the paths into Iln-axa are all heavily guarded. 
Iln-axa, as a plane of pure magic, is the only place where an Angel can maintain its true form for an extended period of time.