The Delver is a magazine primarily intended for Dungeons and Delvers: Black Book, but easily converted to other hacks, clones, and editions of the world's first role-playing game.

The first issue features a myriad of mushroom-themed material for both players and GMs:

A new sorcerer bloodline (requires Appendix D)
A new warlock pact
Alchemical pods (both harmful and helpful)
Magic items
Monsters and molds, including our unique spin on the classic myconid
An adventure featuring the aforementioned myconids