Memory to Mist
Wizard Utility 2

Your magic settles into a creature’s mind, causing it to forget what it just witnessed.

Daily ✦ arcane

Target: One creature that is not involved in combat and that lower level than you.

Effect: The creature forgets everything that happened in the past 10 minutes and for the next 1 minute.

As found in the Dragon magazine, issue 381 page 66.