User blog comment:Miskos3/Fairy Tail Chapter 505: Trump Card, Review/@comment-4449950-20161007232427/@comment-5303512-20161008194427

Zeref healed when Natsu and happy left and after a few moments when he was hit by Natsu's attack.

Mavis was not healed at all since that time when Jacob attacked her physical body, and it has been around a full day since then.