The encyclopedia of the Black Clover series by Yūki Tabata which started serialization in the Weekly Shōnen Jump magazine since February 16th, 2015. The Wiki's main task is to progressively collect and archive all Black Clover related materials into exclusive pages.
Volume 22 of Black Clover wraps up the elf reincarnation storyline.
"With the help of the first Magic Emperor and the leader of the elves, Asta and Yuno now might have a chance against the devil's unlimited power. But in order to put an end to this long battle, the two young mages will have to show strength that they've never shown before!"