To visit the Causeway of Fiends, the heroes found themselves in enemy territory in the (North end?) of the Great Kingdom.
Ruled by the religious leaders of Banaalikron, the heroes were escorted to the main temple.
Tempus, overwhelmed by the diametric evil, opposite to his own religion, faced for the first time the High Priest of Banaalikron, Grace Grenell!
A climactic battle ensued, where both priests took on the power of their deities; a rare opportunity for the gods themselves to continue their battle on the prime material as well as the heavens.
Weakened from being on unholy ground, Tempus eventually fell to Grenell‘s assault, but S’Thiss was not so affected, and with a vicious Cone of Cold, was able to finish the last of the two other combatants, a foul woman and a caster in a (blue robe?)