My first series, The Hounds of Annwn, uses a sigil that represents the entire series: the red deer antlers of Cernunnos. You see it inside the books, on the title pages and at the end, as a sort of frame for the stories.
Now Jake Bullock, my cover artist, has come up with a sigil representing the dying wizard guild for my new series, The Affinities of Magic. Each guild has a specialty and an emblem.
The guild that specializes in overall research, sort of the R&D arm of the guilds, is in terrible shape and has almost died out. Its once-proud symbol, Torch & Scroll, bears the nickname Ashes & Dust. The guild hall itself has been shut down and the few folk left are huddled in the servants' quarters.
But there are some who are determined to raise this guild from the dust and ashes and to revolutionize the understanding and practice of magic. Stay tuned for their stories…
You can see more of Jake's work here.