This small skull made of an unidentified metal floats near you, ready to respond to your inquiries.
Wondrous Item 85,000 gp
You gain a +4 item bonus to knowledge checks about life on the planes and to skill checks to perform divination rituals.
Utility Power At-Will (Standard Action)
Effect: The mimir begins recording all sounds that it can detect within 20 squares of it (+13 Perception modifier). You can stop the recording as a free action, and can play any part of the recorded information back as a minor action. The mimir can store an unlimited amount of auditory information.
Published in Dragon Magazine 414.