Hammer of Breaching

Description
This weather-worn sledge-hammer is highly polished on one side from use. An ornate inscription of a key is carved into its head.

Charges
The hammer has 3 charges, and regains 1d3 charges at dawn each day.

Breaching
If used on a door or other object with a lock, the hammer casts the spell Knock at second level. The spell functions exactly as normal, aside from the range is reduced to touch and if the targeted lock, door or barring mechanism is not magical, it is explosively destroyed. This effect is accompanied by a resounding burst of sound that is audible for 300 feet.

Melee
The hammer can be wielded in one or two hands, dealing (1d8 + Str) one-handed or (1d10 + Str) two-handed bludgeoning damage.