Chalk of Articulation

Wondrous item, uncommon

This one-inch stick of white chalk has a faint red line painted down the side. If you use the chalk to draw a simple face on a surface, you can tell it a message of 25 words or less and also an event that will trigger the message. It takes 1 minute to complete this operation. The trigger event can be as detailed or general as you like, but it must specify something that happens within 30 feet of the chalk drawing.

Each time the trigger occurs, the chalk face animates and recites the message you gave it, using your voice. The chalk face remains in operation for 12 hours or until someone deliberately rubs it out. There is enough chalk in the stick to create 3 faces.