A Magician Who Can Only Forbid Spells

Bu Bai is a military magician in the Atlan Empire, and a super-high-level magician among magicians. It has always been regarded as a mobile artillery fire by the imperial army, because he... Can only cast forbidden curses. If a forbidden curse is followed, thousands of people will die. After fifteen years of fighting against the invaders of the Orc Empire, the Orc Empire surrendered. The only requirement was... That Bu Bai would no longer be allowed to appear on the battlefield. As long as the Atlan Empire agreed, they would surrender. The King of the Atlan Empire thought for a while and finally agreed. So... Bu Bai's military career was over, but the day for him to learn ordinary magic... Came.