She accidentally got cursed by an ancient artifact

When Glynda Goodwitch wasn't teaching combat classes at Beacon Academy, she was working alongside Professor Ozpin to find ways to combat the growing threat of Salem and her faction.

One day, Glynda heard of an artifact that could supposedly boost the aura of whoever wielded it, but came with a terrible curse. Glynda didn't believe that last part, so she ventured out to find it. Eventually, she found the temple and the artifact in question, a gemstone. She picked it up with ease and took it back to her place to study for tomorrow.

However, as Glynda went to sleep that night, the gemstone glowed and caused her panties to grow considerably thicker...