Xanathar's Guide to Barovia: Curse of Strahd Cosmetic Alterations for Xanathar's Spells supplies your DM toolkit with altered spell descriptions befitting the Ravenloft setting. Not only does describing spell effects deepen the immersion your players will feel, but injecting the marks of horror into storytelling is a crucial part of DMing Curse of Strahd.
A few examples:... [click here for more]
Add some Dread to your Domain!
This supplement contains an optional ruleset for the Curse of Strahd campaign. Inside you will find:
Specific Terrors and Weaknesses and rules for how to trigger them that can be used against the Player Characters by the Vampire Lord or other foes.
Rules for the accumulation of Dread, a way to track the corrupting influence the land... [click here for more]