The Pure Horse Tribe worship Kargzant, their sun god, and Ungariant, his wife. There are then various powerful ancestor spirits such as Dastal the Hunter. Their gods are therefore a mix of their own solar pantheon and shamanic practices.
The Zebra Riders are originally of Pure Horse stock, but by taking zebras as their mounts broke that tradition. In Pavis they follow a mixture of the nomad gods and the Storm Tribe, recognising the power of Waha and Eiritha, but also Issaries and, of course, Pavis himself.
The Pentan tradition, which both stem from, is incredibly complex and stretches even into Dara Happan belief. Its a mixture of divine worship, beast totemism and high-ancestor veneration.