BX Advanced Bestiary, Vol 1

This is a 136-page pdf. A free preview of the book can be found here. 
 
Volume 1 of the BX Advanced Bestiary takes the monster entries A-D from the OSE Basic book and expands them with options, added details, use for monster parts, additional monsters, and playable classes based upon the same theme. Each entry is illustrated with art commissioned thanks to the Kickstarter. It also includes rules for training animals.
 
The playable classes are:
*Advanced Cave Locust
*Changeling
*Cyclopskin
*Dragonborn
*Genasi
 
Print versions of the book will be following soon.