Physical Mirror/Holy Smite
annihilates the Improved Sahuagin City. The Sahuagin paralyze themselves with the bolts, which is quite nice. As long as you have no objection to resting several times to clear an area, a single Priest can easily do the place. Oh and the reflection shield... When I did the Imp Sahuagin City with Jaheira having the Reflection Shield and being in front, all Sahuagin grabbed out their spears and impaled her
. They didn't do so with Hisgorth (The Berserker/Cleric) when he used Physical Mirror.