System Keraunos: Legend of Mankind - Advent of Lightning (人類神話・雷電降臨, Jinrui Shinwa - Raiden Kōrin?) is the Noble Phantasm of Nikola Tesla, the sublimation of his various exploits during life and the mystery of many supernatural legends related to him. It is a powerful Noble Phantasm that emits a "furious power" that can be likened to the second coming of gods of thunder and lightning from various mythologies. It qualifies him for the Archer-class, and allows for an extremely powerful electromagnetism manipulation ability even without its True Name being released. Its function upon its name being called destroys the surrounding area through the "outbreak of a limited, quasi-like space-time dislocation".