I believe this is hall number 8 that he wrecked with his training. Good thing the Headmistress see Khan as more valuable than flooring. Thanks for the chapter Eve 5/5!
So he didn't use any actual spells, just let his chaos seep out of him? Why is it surprising that he wrecked the hall's floor? It's what chaos does. I don't understand what he tested in the first place. Did I miss something? đ¤