Religion

There are two main cults: the Church of the Holy Light (monotheistic) and the Old Religion (polytheistic). They mostly tolerate each other, but in Medelan in particular, the Church of the Holy Light is actually more influential.

Eisen, for example, is a follower of the Cult/Order of Light (he often swears by saying "By the Lord of Light!") while the Order of the Rose are actually sacred warriors of the goddess Pretheve.

Polytheistic

 * Pretheve, the Goddess of the Earth and Fertility (Ch. 50)
 * Shanduk, the God of the Beasts (Ch. 109)
 * seems to be known for his crows (Ch. 109)
 * Nuala, the Goddess of Plants
 * Toa (Ch. 112)
 * Qiarra, the Goddess of War (Ch. 112)

Monotheistic
Church of the Holy Light (Ch. 50) Despite the evidence of other gods the Church of Holy Light claims supremacy by dubbing the other deities "agents/emissaries" of the one true god. The other deities accepted this solution for diplomacy's sake and because the Church of the Holy Light was very, very powerful at the time. In the end, it worked fine for both of them. It's like the cult of the saints in Catholic countries: some people pray directly to God/Jesus, but there are a lot of people who prefer praying to the saints.
 * Lord of Light (Ch. 55)
 * Saint Diane (Ch. 61)
 * Order of the Holy Architect, a branch of the Church of Light.