Raiders of the Serpent Sea: GM Reference

From publisher blurb:

This digital bundle is the perfect playing aid for GMs and contains an attractive four panel GM screen as well as a 32-page companion PDF with information to help the GM plan the campaign and manage events. Also includes several maps and location handouts.

Includes:

The GM screen and companion booklet contain tables of information and other reference material useful for a GM to have at their fingertips.
Two 24” x 30” poster-sized maps of the world of Grimnir.
Four 17” x 22” maps of some of the more important adventure areas.
Sixteen handouts of other locations in the campaign, suitable to show the players during play