<_< Bad timing, my friend, I just completed the mission and got rank 5 this weekend.
the Davoi part isnt too hard. I'd recommend getting a high lvl to come with to kill the 2 NMs for key items and a guide for Castle Oz..(prism powders and sneak oils work fine also, albeit a bit expensive, might need a stack) Getting to the magicite isnt too hard, remember in Castle Oz, once u finish gob CS, continue heading down hallway, you'll then find the magicite (I had to go back to the castle to get it >< TY to LotB's Jitt for helping us!)Davoi: Just find the wall of Dark arts and enter (may need high lvls to take down teh orcs)
REMEMBER INSTANT TELE SCROLLS!!!! >< lol