Like Secunda follows Masser, Sithis follows the Night Mother. Her husband pursues, but she seldom pauses, leaving him eternally in shadow.
Sithis has many names, and many parents ... or none at all. But his Fangs ... the Fangs of Sithis still bite. They take particular pleasure in envenoming the weak-minded, the foolish, the greedy, or the headstrong, but the Fangs can destroy the powerful and the wise as well.
Beware those born under the Shadow, and all those who seek to use its power. The downfall of our ancestors is tied to the Fangs of Sithis, and our scales remain darkened by his touch.