Ildwych’s Crystal Castle (D&D 5e)

The tiny castle in the center of the village is filled with puzzles and secrets; can the PCs free the villagers from Fey Prince Ildwych and discover the secret of Summerwine Creek's perpetual festival?  Also included is the new 'mirror passage' spell, two new fey monsters, and a half dozen new magical items.  

By Brandes Stoddard; illustrated by Phil Stone; cartography by Michael McCarthy.