Vaerism, also known as Valerian Thaerism is a monotheistic religion that branched from Thaerism in the 13th century. It teaches the wisdom of Thaer. Its adherents, known as Vaerists, believe in a single God (Thaer), who passed on his teachings to Matilda. It is one of Aurora's largest religions with over 180 million followers.

Symbol of Vaerism worn as a necklace.

Valerian Thaerism formed after the Thaerist reform in the 13th century where it was changed to act more as a way of life than a classic missionary religion. A group of old-way Thaerists from the Kingdom of Valeria sought to introduce a more hard approach to the assimilation of irreligious groups. Valerian Thaerism is considered a denomination of Thaerism.