The High Magic Sourcebook
The upcoming High Magic Sourcebook is a D&D 5e supplement written, designed, and illustrated by me, with some design consulting from Steve Fidler, James Introcaso, and Chris S. Sims, and the editorial wizardry of Laura Hirsbrunner. It is now available on the DMs Guild and has already gone Silver. Check out the full preview on the product page.
Software: Procreate and Photoshop (illustration), Adobe Illustrator (title treatment), Adobe InDesign (book design and layout).