Narf, it's your turn. I think this could be another Narp-centered battle, although the amulets probably could be overloaded. If they were well designed, though, they would simply redirect/vent the excess energy harmlessly.
We also need to start thinking about a motive. I can see why someone might want to keep the signet ring separated, and why someone might want to control the court wizard and borrow his skills, and even why someone would try to attack the baron's residence; but we kind of need a single explanation/motive for all three. Sounds a little overachieving for your typical baddie.

Maybe they were selling their services to another villain...?
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The Unpronounceable Krsqk
"Well, sir, at the moment my left processor doesn't know what my right is doing." -
Freefall