Smoke, Steel & Sinew

Concept: “The Spawn of the Black Forge hath come. Their flesh weeps inside pyg iron cages, spurred forth by the infernal engines of their burning brimstone hearts.”
Content: A trio of machine-themed enemies
Writing: Includes an overview, tables for origins and encounters, and individual descriptions and stat blocks
Art/design: Fits a lot of content onto a single spread without compromising comprehension or usability
Usability: A toolkit for small adventures or campaigns set amidst an all-out invasion