This tin whistle is covered with runes that look like they have been crudely scratched into its surface.
Wondrous Item 840 gp
Utility Power (Teleportation) Daily (Move Action)
Effect: Close burst 10 (one ally in the burst). The target teleports to an unoccupied square adjacent to you.
Published in Mordenkainen's Magnificent Emporium, page(s) 85.