The clues are to be found in Ars Magicana. You can find a more detailed quest description and walkthrough here, but be aware this might spoil things a bit.

By the way, Elerrea Stormwhisper is a great fantasy-game name! <img src="/ubbthreads/images/graemlins/kitty.gif" alt="" />

I am in blood
Stepp'd in so far, that, should I wade no more,
Returning were as tedious as go o'er.