Frostweans

Concept: “The blued, frost bitten corpses appear when the winter winds howl and the snow falls heavily … seeking their revenge.”
Content: An undead scourge that gains power by wreaking vengeance
Writing: Provides 4 stat blocks alongside plenty of background for inspiration
Art/design: Text heavy, but colors aid quick navigation
Usability: Gives GMs carte blanche to make it even meaner and nastier