A Weapon of slaying kills a specific class of monster in one hit with 100% accuracy. For example, if you equip a spear of animal slaying, any toad you attack will perish in one hit.

A weapon of jelly slaying does not get corroded when attacking an acidic jelly. This does not protect it from other creatures which corrode weapons, however.

A weapon of slaying will "gleam balefully" if equipped in the presence of a monster it targets.

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