Knock

Arcane Transmutation/Alteration
Level: Magic user 2
Range: 60 ft
Duration: See below
Area of Effect: 10 square ft / level
Components: V
Casting Time: 1 segment
Saving Throw: None

The powerful magic words of a knock spell open doors that are stuck, barred, locked, or even wizard locked. Chains (even those that are welded) and chests will also spring open under this spell. Doors that operate by gravity, such as portcullises, will not be opened by means of the spell. If a door is secured by a number of devices, only two will be opened by the spell; a triple-locked door is proof against a single casting of the enchantment.