When you toss this grappling hook into the air, it soars off under your mental command.
Wondrous Item 25,000 gp
Utility Power At-Will (Minor Action)
Effect: You command the hook to fly from you to an unattended object within 20 squares of you that you can see, and it magically latches onto the object. Once secured, the hook extends a thin rope back to your hands. Climbing the rope requires an Athletics check, or you can pull the object toward you with a Strength check. The hook and rope can support up to 3,000 pounds before the hook detaches from the surface. The rope cannot be tied or knotted in any way, nor can it be used to attack or affect a creature.
As a minor action, you can command the hook to detach from the object and return to you. This causes the rope to retract.
Published in Adventurer's Vault, page(s) 172, Mordenkainen's Magnificent Emporium, page(s) 84.