Thought Acceleration

Thought Acceleration (思考加速) is an Extra Skill commonly used for its usefulness and applications. Rimuru Tempest has it under Unique Skill Great Sage or Ultimate Skill Raphael.

Abilities
It significantly increases the user's thought processing speed. The acceleration varies from a few hundred times to millions of times depending on the individual.

Trivia

 * Rimuru cast this on Clayman, making the pain from the pummeling last for weeks, longer than the actual seconds it took in reality.