Frosthaven, the latest installment in the Gloomhaven series by Cephalofair Games, has taken the tabletop gaming world by storm. One of the most intriguing and complex components of the game is the Prism, a powerful crystal that can greatly influence your campaign. In this Frosthaven Prism Guide, we'll break down everything you need to know about the Prism, from its basics to advanced strategies.