Thought Acceleration

Thought Acceleration (思考加速) is an Extra Skill and commonly used by the majority of the characters in the series. Rimuru Tempest and many other has it under their Unique Skills or Ultimate Skills.

Abilities
It significantly increases the user's thought processing speed. The acceleration varies from a few hundred times to millions or even hundreds of millions 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.