: Perhaps the Shade form of Mazzarin, which was forced onto
: him after the Watcher and the 7th wave of thrall
: overcame him, collapsed the shrine onto Sinis, who was
: still living, then made into a Shade. It makes sense
: that way because the Mazzarin Shade (as seen and
: killed in the Watcher level in TFL) was still around
: during Alric's time.
Yeah, I think this is what was originally supposed to happen. It seems like TFL was originally much closer to the Black Company, with most Dark sorcerers starting out pretty much good, and then being turned evil or being killed and resurrected evil. The Watcher killed Mazzarin, then resurrected and controlled him as a Shade; Mazzarin in turn killed the (probably) good Avatara Sinis, who was then Shadified.
--SiliconDream