Palladium: Reason and Existence
This item looks like a songbird made with exquisite care and exacting detail from the ﬁnest crystal. It can carry a spoken message, of any length, to a single person designated by the owner. It ﬂies to the target mind at a speed of approximately 200 leagues (600 miles) per hour, unerringly ﬁnds him wherever he may be, and delivers the message. It may receive a message in reply, then returns to its owner. If for some reason the target mind cannot be found, the Bird goes to where its owner thinks the mind is, then returns without having delivered its message.
Since a Crystalline Bird physically flies between those communicating, it is possible for someone to capture it in mid-ﬂight and then break it, use magic to dispel its owner’s control over it and then take control of it.