Straining both your patience and your keen ears, you hear nothing in the duke’s private chamber. That’s why you’re so surprised to see the duke when you boldly enter.

Component Cost: 30 gp
Market Price: 75 gp
Key Skill: Arcana (no check)
Level: 1
Category: Warding
Time: 10 minutes
Duration: 24 hours

You ward a single room (or a burst 4 area), against eavesdropping. Creatures attempting to listen to something in the warded area from outside the area take a –10 penalty to their Perception checks.

Published in Player's Handbook, page(s) 312.