From publisher blurb:
MONSTERS FOR YOUR SCARRED LANDS ADVENTURES AND BEYOND!
Over the course of the Vengeance of the Shunned campaign art, adventurers meet many residents of Scarn, encounter many creatures that creep and crawl across the face (and under it) of Ghelspad, and are set upon by numerous foes set on halting their progress. The Peril Primer gathers all of these creatures and nonplayer characters into one tome!
The Peril Primer includes
54 creatures, new or converted from the original 3.5E sourcebooks
A new creature template, the banewarped
A virus left behind by an ancient civilization, the slarecians
29 nonplayer characters and character types
And the statistics for the main villain of the series, Maghiel, as she appears in various adventures throughout the arc!