User blog comment:IamJakuhoRaikoben/Chapter 357: The Nine Demon Gates, Review./@comment-5036235-20131025182146

I think Laxus might flee the battle. IIRC, Ur or Lyon once said that all of human's spells are ineffective when dealing with demons. During the fight, Laxus might realize that none of his magic work on Tempesta, thus flee the battle. After all he is lightning, there is no way the lion guy could catch on him.

If not, I bet on Laxus activating his Dragon Force, which he has already hidden for over 200 chapters.