Prayer

You should not pray when your god is angry at you or if your luck is bad. If you pray too often your God will become angry and you shift your alignment status.

Praying may also make your god reward you by fixing your problems, such as lycanthropy, or with a spellbook, an artifact or an intrinsic. Praying on the altar of some other god will anger your god, decrease your luck, and you might be punished in some other way.