This one I’m not actually sure about, but the last line says
“If you make good use of it, you can easily identify friends and foes.”
I could be wrong, but identify really seems like the wrong word here. Modify fits much better for what the thaumaturge class actually does, but it sounds awkward, so maybe the line could use a rework if that’s the correct word.
The Korean actually says something along the lines of ‘identify’. Think making all your friends bigger or something so it’s easier to distinguish.
I changed it to distinguish. Hope that’s better.