Talk:Sigils/@comment-67.198.40.147-20150331012559/@comment-82.153.106.17-20150331013259

That's because Tyl doesn't have one.

If you've scanned a boss you can see his drop list in the codex and the ones that say they drop sigils are:

Jackal, Vay Hek, Alad V, Ambulas, Sargas Ruk, Hyena, Lephantis, Lynx, Lech Kril, Vor, Raptor and Phorid