We all know that Soulblighter used Tramist's Mirror to bring back Shiver's soul from the dead. But is this also what the fallen lords used to bring back shades? I think so for the following reasons:
1) Shiver and Shades float in the same way, toes pointing down, steady float (unlike the wabling souless), with a large eyrie shadow under them.
2) a- Shiver is a spirit of a dead Fallen Lord (dead magic wielder)
b- Shades are spirits of dead Avatars (dead magic wielders)
But if I'm right, and SB had access to Tramist's Mirror why then did he not make shades out of the dead Avatars of the great war such as Murgen and Cu Roi?
Im sure Forrest will be he momentarily to prove me wrong, or right =)