User blog comment:Omega natsu2/Chapter 371: Tartarus Arc, Part 2: Song Of The Heavenly Dragon, Predictions./@comment-103.14.62.143-20140211022918

Elfman and Cana will die prompting Gildarts to come back and Mira to explode in anger. Then the demon modification of Mira will not be finished while she still gains some power-up. The other guild members will be seriously injured.