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]