The Entombed

Concept: “Long ago, a devious mage entombed a zombie within a make-shift wall blocking a secret passage.”
Content: The old zombie-behind-a-fake-wall-guarding-a-secret-passage gag
Writing: Provides a general step-by-step guide for springing this trap
Art/design: Text layout cleverly mimics a gap in a stone wall
Usability: “PCs should never play with dead things.”