Ceris

Ceris is a young civilization in its iron age — organized kingdoms, metallurgy, written laws, and an active merchant class. The wildcard is the Resonants: a hereditary group of perhaps 40,000 individuals who practice resonance magic, claiming cultural descent from an earlier species that no archaeological evidence has yet confirmed. The kingdoms tolerate them — their healing work is valued — but nobody fully trusts a group whose origins nobody can verify.