Knock

2nd-Level Transmutation
Casting Time: 1 action
Range: 60 feet
Components: V
Duration: Instantaneous

Target. One object that you can see within range, such as a door, a box, a chest, a set of manacles, a padlock, or another object that contains a mundane or magical means that prevents access.

Effect. A target that is held shut by a mundane lock or that is stuck or barred becomes unlocked, unstuck, or unbarred. If the object has multiple locks, only one of them is unlocked. If you choose a target that is held shut with arcane lock, that spell is suppressed for 10 minutes, during which time the target can be opened and shut normally.

Special. When you cast the spell, a loud knock, audible from as far away as 300 feet, emanates from the target object.

At Higher Levels. You can target an additional lock for each slot level above 2nd.

Source: PHB 254, SRD

Changelog

Added upcasting option.