Faust

Faust (究明之王) is Veldora's Ultimate Skill that evolved from Unique Skill Investigator. He obtained Faust shortly before being released from the Unlimited Imprisonment. Raphael demanded Veldora to evolve his Investigator into an Ultimate Skill so he can be more useful to Rimuru to which Veldora acquiesced. In order to hide that he was pressured by Raphael and also to surprise Rimuru, Veldora pretended that he didn't gain the Ultimate Skill himself but instead used the Gifts from Rimuru's Harvest Festival as an excuse for the origin of his Skill evolution.

Effects

 * Thought Acceleration
 * Appraisal
 * All of Creation
 * Probability Estimation
 * Pursuit of Truth

Trivia
Король Исследований Фауст
 * Named after Faust the protagonist of a German legend, a scholar on a quest for knowledge, who made a pact with the Demon Mephistopheles.