Some monsters can be pacified without resorting to spells and swords. However, the character must be able to speak the creature's language. Impish is the language skill that allows you to speak to Imps.
Impish's governing attribute is Intelligence.
"Impish is a language skill checked whenever one attempts to speak with an Imp." The skill check occurs when coming within range of an Imp. If successful, the creature will be non-hostile (will not attack unless provoked).
There are no classes which have Impish as a skill.
Impish training is offered by the following factions: