Spellbook of knock

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spellbook of
+   knock   Light green spellbook.png
Appearance random
Abundance 3.56%
Base price 100 zm
Weight 50
Turns to read 1
Ink to write 5–9
Spell type matter
Level 1
Power cost 5 Pw
Direction beam
Equivalent wand of opening

In NetHack, the spellbook of knock allows you to learn the spell of knock.

Effects

The effect is the exact same as a wand of opening, and will unlock doors and containers, as well as revealing hidden doors.[1]

Strategy

Since a lock pick or skeleton key can unlock doors with no power cost, this spell is considered almost useless, and the spellbook is usually thrown away, polypiled, or overwritten. However, it has many other uses besides the obvious: as a matter spell, it can be used to train for casting more powerful spells in the school, notably polymorph. It can also expose secret doors whose locations are known to the player but not the character (especially on special levels), and can open the Castle drawbridge without needing an instrument to play the passtune.

Casting knock also unlocks doors at a distance and does so slightly faster than a key would manage; because of this, it might be useful on the Astral Plane, though a wand of digging is better because it will raze the doors. The spell also causes engulfing monsters to expel you, making it useful on the Plane of Air. It can also free you from a bear trap or a web.[2]

SLASH'EM

In SLASH'EM, there are new indestructible doors at the top level of Vlad's Tower. This spell has no effect on them, there is no message, and nothing happens.

See also

Reference

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