User blog comment:Omega natsu2/Chapter 375: The Supernatural, Predictions./@comment-83.255.207.11-20140313153509/@comment-24066070-20140313185424

I don't think Precht made a 180 turn towards darkness as he admitted he felt a little bit sad for having to fight FT and he also told Ultear not to use Last Ages, possibly hinting at some concern. He also thought there were too many things that couldn't be called good or evil, so he likely didn't care whether he did good or bad stuff, as long as he got what he wanted.

Jellal will never again use these dark spells, which is a shame since they were quite cool and strong.