It was part of shard of the dead II. I don't think it has any relevance to the current story arc.
I think those tortoise islands might, though...
One thing I've noticed with the quest npcs is that more of them spawn as you kill stuff in the rift. When I started killing stuff last night, we only had the main guard. I went into the rift and killed 3 or 4 shadow lords and noticed that we had spawned a mage. We still didn't have the mage in the lyceum, so I'm assuming that we just need to keep killing spawns in moonglow.
Right now, I think sutek has to be spawned by killing lots of spawns in the rift. I had the guard tell me to talk to one of the mages before we had any mages spawned, so I think you need to actually kill enough stuff to spawn the quest npcs before you can advance the storyline.
Also, if I'm right about how it works, that's really a bad idea. There's no way to tell what you're looking for because you could search over an area before the npc you were supposed to talk to has spawned. This creates an inconsistant storyline and a less enjoyable event experience.
I have to tell you, I was annoyed when Avery told me to talk to one of the mages and the mages hadn't spawned yet. Most ppl on my shard are bored with the event now... we want more substance than "ok, go kill lots of monsters for a long time", so they stopped. This puts a much bigger strain on those of us who are trying to advance the storyline because instead of needing to kill a small portion of the monsters, we have to kill tons of them.
I already know an npc will spawn in the lyceum and that npc isn't spawned yet. This leads me to believe that sutek doesn't even exist on my shard right now even though the npcs have basically told me I can go find him in his refuge... Inconsistant storyline... bad idea...