It's pretty interesting seeing MTG actually shown in such a way, with them casting spells I actually recognize on the fly. It really does add a certain something that many series, like most isekais, lack, where it feels like they just make up whatever is convenient. (I have to call BS on this guy getting all 4 Giant Growth spells so suddenly, though)
"Good and Evil are just perspectives and opinions."
Moral Nihilism is just irresponsibility and laziness (and potentially obfuscation & sabotage).