Anima ( Revenant Wings ) Anima is a term used in " " to refer to the part of a person ' s soul that allows them to feel emotion . It gives birth to the Espers known as Yarhi . Nature . Using auracite drains a person ' s anima little by little , leaving them more and more apathetic until they eventually stop feeling any emotions . The stolen anima can be used to create Yarhi in the World of Illusion ; these Yarhi can then be summoned by others possessing auracite . Anima stolen this way are trapped in auracite crystals , particularly in the massive auralith s . Those who have had their anima stolen seem distant , emotionless , and apathetic , which Vaan and his party note when they meet the aegyl Llyud . Llyud provides much of the game ' s explanation of anima as he slowly regains his while in the party . By comparing the passion Vaan and the others display in helping others to the cruelty of Ba ' Gamnan ' s pursuit of Balthier , Llyud notes that anima can drive people to good deeds or to bad ; he also speculates that Fran ' s uncanny ability to read people stems from her anima . His anima begins to return after the auralith ' s destruction , which he finds bewildering at first . When Vaan disappears , Llyud is surprised at the sense of loss he feels ; Penelo has to explain that grief is a normal feeling when losing a friend . Later , Vaan declares that it is good to feel anger and sorrow as well , because they are also part of life , but Llyud decides emotions that take on another ' s suffering are sometimes a cruel thing to feel . Story . Feolthanos began using auracite and the auraliths to steal anima from the aegyl soon after they came to Lemurés , which granted him immortality and allowed him to control the aegyl . Over these thousands of years he crystallized into a giant auralith himself , losing most of his anima and retaining only feelings of hatred and anger . The harvested anima within the auraliths find rest in the World of Illusion , and aegyl and Yarhi are both slaves to Feolthanos ' s will . When the Sun - Cryst explodes , the swell of Mist breaks the barrier around the sky continent and Sky Pirates start to appear throughout Lemurés ; Feolthanos uses this chance to steal their anima as well , along with the anima of one of the last members of his own family , Mydia , whom he turns into the Judge of Wings and uses to invade Ivalice . Feolthanos tricked Mydia by promising to resurrect her dead love , Velis , when really he used her anima to create an illusion with Velis ' s form . The party meets this Velis in the World of Illusion , the realm of the Yarhi they are sent to after Balthier destroys the second auralith . Before he transforms into the Yarhi Odin , Velis explains the relationship between anima and Yarhi : summoning Yarhi requires the summoner to surrender a piece of their anima , and surrendered anima that is tainted with evil becomes a beast . He tells the party that , through Mydia , Feolthanos means to gather the anima collected in the auraliths and use that power to lay siege to Ivalice . Velis begs the party to destroy him , so that Mydia might regain some of her anima , and to destroy all the auraliths and release the anima they hold before Mydia can drain that power . When Balthier destroys the second auralith , some of the aegyl ' s anima returns to them . However , as Fran explains , base emotions are quickest to surface , and so many aegyl turn their new anger and hatred against Ivalice . This complicates the party ' s attempts to track down Mydia , as they must keep the aegyl from invading Ivalice , but they do eventually find and defeat her . Mydia regains her anima when her Judge of Wings guise is destroyed , and although it is too late to save her , her released anima guides the party to the Keep of Forgotten Time where Feolthanos lives . There they must defeat ghostly visions of aegyl formed from the anima trapped in the Keep . When the party finally confronts Feolthanos , he claims he drains the aegyl ' s anima to keep them from suffering , doing them a favor by giving them a peaceful world and protecting them from sorrow , anger , and hatred . The party also learns that Feolthanos placed part of his anima in the auracite he left in the Glabados Ruins , linking it to his soul so his family back on Ivalice might one day find it , summon the airship " Galbana " , and follow him to Lemurés . Once Feolthanos has been destroyed , the aegyl fully regain their anima and leave Ivalice to look for a new home . The Yarhi , manifestations of the stolen anima , disappear from the world , and the " Galbana " , brought to life by Feolthanos ' s original anima , flies away and disappears .