I read the above info and all the posts here. I left this website thinking this quest is gonna be cake. I mean really it sounds easy enough. I went to POK bought a TP to Stonebrunt and ran to Gulf of Gunthak. About 6 hours, and 2 levels later I had the spell Temperance.
My words of advice for new questers:
1. Download the maps from the cartography section of EQ Atlas. It makes things much easier.
2. Definatley need the invis and hope it doesnt break and if it does run like hell.
3. Erudite spirirt popped at Loc neg 840, neg 675 Ph was a savage skeleton.
I camped the erudite spirit for approx. 3 hours the night before killing everything with no luck and then for about 3 hours the next morning killing just ph and surrounding savage skeles. I don't know if there is a connection or not but you dont have to kill everything just the PH. She popped at 12:25 PM EST. Noone was in gunthak. The entire beach was full of mobs. I killed just the PH and the 2 skeletons near it. The spell did NOT drop to the ground. (I was told it would) I have heard many people say that they killed the PH once and then she spawned *shrug* i think its just luck