Evil High Priest - The Dark Ritual Expansion

From the publisher:

This is an expansion for the Evil High Priest game of cult supremacy.

It includes four new cult boards – those of the Ancients, Windwalker, the Watcher, and the Yellow Sign. It also contains unique monster cards, investigator cards, and priest cards, which can be used in any game of Evil High Priest for new exciting functionality.

You need "Evil High Priest" Core Game to play!