Cendra shudders visibly at the through. "No, if such a calamity had befallen us we arcanists would be the first to know as the magical weave from which we draw power would collapse. I believe when Mystyl sacrificed herself, the weave did collapse and Mystra was born and took over the duties and limited magic."
The old elf nods sagely, "I am sorry that after two years we have so little information to give you as to the nature of the threat, but magical means of seeing and travelling into and out of the ring do not work. Oh, that is probably a good point to mention, spells like plane shift and teleport and others of that nature do not work. One of the groups we sent in found that out the hard way."