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Knock was a transmutation spell that could open locked, barred, or stuck doors with only the spoken word.[1] Clerics who had access to the greed domain could also cast this spell as a divine power.[2]

Knock was one of the spells granted to the wearer of the commander's rings worn by the leaders of the War Wizards of Cormyr.[7] It was also a power of a rod of displacement, which was a magical item from Myth Drannor,[8] or of a staff of open doors or a staff of the magi.[9][10]

The spell had a reverse form called lock.[3]


This spell would instantaneously unlock or unstick a number of doors within a range of at least 100 feet, depending on the power of the spellcaster. Bars holding doors shut would be lifted, and padlocks closing an item would become unlocked. Secret doors could be unlocked as well, but they still had to be found to be passed through. Magical locks could be unlocked—unless they had been protected by the secure spell—but they would relock after ten minutes.[1]

The spell had a number of limitations. It only affected doors, boxes, or chests or other such things that could be opened. It did not actually open the door or box; it only removed the hindrances toward doing so, so a heavy gate or portcullis might still pose a problem for the caster. The spell had no affect on ropes or vines, so a box wrapped tightly in rope still had to have the rope untied or cut to be opened. It was limited to undoing only up to two means of preventing access, so that the contents of a locked chest welded shut and wrapped in a locked chain could still not be fully accessed by a single casting alone.[1]

One strange use of the knock spell was its ability to "unlock" the healing power of a star ruby when followed by the wraithform spell. The star ruby would then become a thick red vapor, which had powerful healing properties when inhaled.[11]

The reverse form, lock, shut, locked and bolted a door it was cast upon.[3]


The spell simply required a verbal command.[1]


  1. 1.0 1.1 1.2 1.3 1.4 Jonathan Tweet, Monte Cook, Skip Williams (July 2003). Player's Handbook 3.5 edition. (Wizards of the Coast), p. 246. ISBN 0-7869-2886-7.
  2. 2.0 2.1 Richard Baker, James Wyatt (March 2004). Player's Guide to Faerûn. (Wizards of the Coast), p. 189. ISBN 0-7869-3134-5.
  3. 3.0 3.1 3.2 David "Zeb" Cook (August 1989). Player's Handbook (2nd edition). (TSR, Inc.), p. 143. ISBN 0-88038-716-5.
  4. Richard Baker (1996). Player's Option: Spells & Magic. (TSR, Inc), p. 180. ISBN 0-7869-0394-5.
  5. Dale Donovan (January 1998). Cult of the Dragon. (TSR, Inc), p. 125. ISBN 0-7869-0709-6.
  6. Jeff Grubb and Andria Hayday (April 1992). Arabian Adventures. (TSR, Inc), p. 152. ISBN 978-1560763581.
  7. Sean K. Reynolds, Duane Maxwell, Angel McCoy (August 2001). Magic of Faerûn. (Wizards of the Coast), p. 146. ISBN 0-7869-1964-7.
  8. Sean K. Reynolds, Duane Maxwell, Angel McCoy (August 2001). Magic of Faerûn. (Wizards of the Coast), p. 148. ISBN 0-7869-1964-7.
  9. Sean K. Reynolds, Duane Maxwell, Angel McCoy (August 2001). Magic of Faerûn. (Wizards of the Coast), p. 150. ISBN 0-7869-1964-7.
  10. Monte Cook, Jonathan Tweet, Skip Williams (July 2003). Dungeon Master's Guide 3.5 edition. (Wizards of the Coast), p. 280. ISBN 0-7869-2889-1.
  11. Ed Greenwood, Eric L. Boyd (1996). Volo's Guide to All Things Magical. (TSR, Inc), p. 51. ISBN 0-7869-0446-1.

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