User blog comment:FairyRaven/Fairy Tail Chapter 435 & 436: The Cry of Victory & Memoirs, Review and Commentary/@comment-112.198.79.30-20150518132830/@comment-112.198.77.113-20150518164759

One magic is kinda related to Zeref.. Layla's death might be related to Zeref as well or he dragons

and for sure, Acnologia and Zeref might be in one arc.

The ten wIzard saints might appear when everything turn shit in the magic world. Which Zeref might be the one to cause. But it is possible for a different arc for them

Lumen Histoire wll be in Zeref's arc as well.

So i think, it is Getting near to its end.