Jibril

(From No Game No Life)

Jibril is the angelic librarian of the great tomb of Nazarick and who has an insatiable hunger for knowledge to get it although prefers less violent methods of acquiring said knowledge she is willing to go to any length very skilled at using all kinds of magic quite possibly one of the most skilled Casters in all of Nazarick due to her Angelic nature she has the ability to cast Resurrection Magic that can revive somebody Within a day of dying note it can be increased if certain actions are taken prior moments after death such as magic (leaving it open)