Cody and his band of 4 level 11 clerics/level 12 mages and Yoshimo (very temporary party member)
As I said in my last post, we were ready to try the shadow dragon. This is possibly the smoothest victory but more on that in a moment. We summoned 5 aeriel servants, and did what buffs that made sense, including negative plane protection.
Buffs and positioning can be seen here.We opened with 4x lower magic resist and doom. Next round few more dooms and malison and then started laying in the direct damage - most of it was either MMM, magic missiles, or flamestrikes. However, In 3rd round Joshua ran out of direct damage and for the heck of it tried blind - as you can see below, it worked!

This basically made Thaxxssillyia a sitting duck. We just laid into it, and it couldn't do anything except die it seems. The party was never even attacked, either by breath or physically.

It's lich hunting time. Our first target was the lich in the Unseeing Eye area. We stayed in that room and just sent skeletons, one at a time. The lich had an incredible amount of spells. Eventually it started using level 1 and 2 spells. That was our cue to send in an Aeriel Servant, and it finished off the Efreeti and the lich by itself.
Next lich was a little bit tougher (one in bridge district), partly due to that there's quite a bit less room in this room than the other one. However, same strategy, hug wall and send in weak summons at first then Aeriel Servant. When the Aeriel servant was sent in, it got caught on a wall. The lich approeached under protection of fireshield and maybe PfMW too, not sure. Well, we have no level 6 spells that can hurt it, so just did MMMs -- that was eventually enough to finish it, though some of the MMMs got reflected (spell turning I guess).
Time for Kangaxx himself. I didn't try anything new here - easy to fail, so tried a reliable strategy. I sent 4 aeriel servants to the far side of the room (left). At the right the AI was off and party was invisible. Next Hanna used a protection from magic scroll, equipped her IMoD and started the battle. It went slow, since the lich was protected from Hanna for so long (plus he saved vs death quite a few times), eventually though Hanna did cause the demi-lich form to appear. The demi-lich part of the battle was anti-climatic - it tried a single imprison on Hanna (failed) - and Hanna connected for 2 damage and slayed it. The ring went to Hanna, and the +2 ring Hanna had went to Cody.

I then recruited Yoshimo, a very temporary party member since we are headed for Spellhold immediately. Reporting our success in the vampire lair to Linvail got the party except Aerie to level 12 mages. Everyone learned contingency and put in helpless > remove paralysis. Belle also has a minor sequencer, wasn't sure what to put in it, so for now has MM and glitterdust.
When we got to Brynnlaw and dealt with the initial vampire ambush, they of course charmed the only person who didn't have charm immunity, Yoshimo. After killing the vamps we ended up dooming and holding Yoshimo to get him to stop attacking us. We then rested and then our sequencers are now active.