Rai knew that although Andrew was weakened, he was also slowly weakening. He yelled what could possibly his last command.
"TATAKAU MONO TACHI NO RAI!!!"
He yelled.
He summoned a thunder sword of pure magic and flashed in and out of existance, though dodging the inferno was futile. He ran towards Andrew, his inner fire ablaze. He struck once, creating a flash of thunder. He struck again, many times, until he could no longer hold in his energy. He sank the sword into the ground and pulled it out. An enourmous column of thunder came out. Rai struck Andrew, sensing his own weakening.
He survived, but was badly injured. His body tingled with the excess magic.

(Hope I'm not god-modding) Seeing no use in pursuing Andrew anymore, he struck himself with lightning and disappeared from sight, leaving the once beautiful plains a blazing wasteland.