Knock (Alteration)
Level: Bard 2, Mage 2, Sorcerer 2
Range: Visual range of the caster
Casting Time: 1
Duration: Permanent
Area of Effect: 10-foot radius/level
Saving Throw: None

The knock spell opens stuck, barred, locked, held, or arcane locked doors. It opens secret doors, as well as locked or trick-opening boxes or chests. It also loosens welds, shackles, or chains (provided they serve to hold closures shut). Knock does not raise barred gates or similar impediments (such as a portcullis), nor does it affect ropes, vines, and the like.