User blog comment:IamJakuhoRaikoben/Chapter 433 & 434: Ikusatsunagi & Demolition Fist, Review./@comment-2214433-20150511162913/@comment-76.161.172.226-20150511174249

Zeref and Acnologia have been suggested to be capable of ravaging the world. Acnologia for his part pretty casually blows away islands. So this is a necessary power up to face the two of them sometime in the next 150-200 chapters.