Lethargy is an affliction which temporarily disables the unique mental and physical traits of one's victim, nimble and quick-witted, until it is cured.
Adventurers can be delivered lethargy through Hypnosis skill and the two-handed specialisation of Weaponmastery Hew. A two-handed knight hewing either arm can deliver recurrent lethargy until such a time as their foe cures all their wrist fractures.
Eating a ginseng root or a ferrum flake will cure the lethargy affliction.