Xzar's Saved by the Spell

A user by the name of Myrmuzduur discovered a way to save Xzar from the Harper Assassin. I couldn't find this story anywhere else but here.

http://www.gamefaqs.com/boards/258273-baldurs-gate-ii-shadows-of-amn/66939866?page=1

I did it!

Imprisonment was the answer. He has to be imprisoned a split second before the Harper spawns, just as he finishes casting the polymorph spell which causes her to spawn.

Here is the timing I managed to achieve. Edwina casts Imprisonment and just as the cage animation appears, I talk to Xzar:



And here is the dead Harper, minus Xzar who is imprisoned:



Here is Xzar, saved from ignominious instant-death, ALIVE AND STANDING ABOVE THE CORPSE OF HIS MURDERER, just like I said he would be:



That's all he'll say to me now as well. No more dialogue. Would have been nice if they'd snuck in something there but oh well.

Mission accomplished.