Fevered certainty of Caiphon

Favored certainty of Caiphon is spell used by warlocks, most often those of the star pact. When cast, favored certainty of Caiphon bestows upon its caster with dark and forbidden knowledge, giving them an advantage over others in various mundane or heroic tasks alike. However, the knowledge is intoxicating and flushes the warlock with a small touch of the madness of the Far Realm, which like the benefits gained, lasts only for a moment. The spell is difficult to cast and warlocks can only call upon Caiphon's power in this way once per day.