Null Murmur

Create a small zone of swallowed sound around one creature, object, or 5-ft. cube within range. The area muffles speech, footsteps, mechanisms, and impact sounds. A hostile creature in the zone must make a CHA save or subtract 1d4 from its next verbal, thunder, or command-based power check before the effect ends.

This power has its own stable page so it can be linked from any character, item, location, story post, bargain, curse, or future reward.