Wizard-Spawned Insanities is a monster manual for the Dungeon World role-playing game. The thirteen monster entries it contains are illustrated in full colour, along with a host of variations, random tables, adventures, dangers and their grim portents, custom moves, items, locations, plot hooks, secrets, and more.
This is NOT just a reprint of the Monthly Monsters material! Each monster has been revised, expanded, and given new illustrations. Every page contains full-colour background art.
WHERE TO GET IT: From DriveThruRPG, click this link
The pdf comes in two versions: one full-colour, the other printer-friendly (with B&W text pages and full-colour monster illustrations). Both are digest-sized, 110 pages, for US$15.
The print is US trade-sized, full colour, 110 pages, for US$30 and comes with the pdfs for free if you want them.
You can also buy the print version by itself (no pdf!) from Lulu at this link. The quality is almost identical, but some countries get much better shipping rates from Lulu.