For those who might have been interested in purchasing the GM’s Guide to the Duermar setting previously, but hadn’t had a chance yet, the PDF is currently and until the end of the month on sale (25% off): https://www.drivethrurpg.com/product/286335/Open-Legend-RPG--Duermar-Descend-into-Madness--A-GMs-Guide
Also, if you just want to have a quick peek and get your toes wet in the setting, maybe find out more about the Sanity or the Wild Magic mechanics, the Player’s Guide is always available for free: https://www.drivethrurpg.com/product/286052/Open-Legend-RPG--Duermar-Descend-into-Madness--A-Players-Guide
Go check them out!