Fairy Tail (2018) Episode 12 English Subbed Episode Title:Mavis and Zeref.Episode Description:In X686, Mavis learns the unperfected black magic spell Law from Zeref, which she later uses to save her friends' lives at the cost of her physical growth. She re-encounters Zeref ten years later after she and the rest of Fairy Tail have participated in a four-year-long war. Zeref discovers that she has been inflicted with Ankhselam's curse for using Law, reasoning that Mavis's tactical command during the war has offset her life-stealing powers by dulling her respect for life...