Talk:Overlord Volume 10/@comment-28588118-20160619175208/@comment-27359021-20160619181950

The once a decade thing was really just protection for him against a possible player with that spell. He talked about the possiblity of being blamed for a massacre via that spell even if another player did it. Since he seems to be the only magic caster known to the general public that can use that spell. He could easily just say later that he lied because he didn't trust Osk, and to protect his reputation against possible slander.