Clavicus Vile Clavicus Vile ( in Daedric script , ) , also known as the child - god of the Morningstar , and the Prince of Bargains , is one of the seventeen Daedric Princes . He is best known for granting wishes and entering into pacts with mortals . He is the Daedric Prince of Power , Trickery , Wishes , Serenity and Bargains . Invocation . The summoning date of Clavicus Vile is 1st of Morning Star . Clavicus most often takes the form of a small , impish man with a pair of horns . Personality . Clavicus ' dealings with Mundus are usually with individuals who wish to have something and , by summoning him , Clavicus gives it to them . However , he is known to take back his deals at inopportune times ( for the summoner , not Vile ) . He loves toying with mortals , generally for his own entertainment rather than for any particular purpose , and has been said to be fond of mortals ' souls . Clavicus has been known to split off portions of himself to create sentient objects or entitites . While the permanent binding of spirits into objects is the usual process of creating Daedric Artifacts and Lesser Daedra , Vile ' s creations have shown more independence than that of most other Daedra ' s creations . These independent fragments are discussed below . Barbas . Barbas is a shapeshifting Daedra who houses a significant proportion of Vile ' s power . He most often takes the form of a dog , but has been known to appear as a Scamp called Creeper . It is possible that Barbas has a degree of precognition , as he warned that returning the Umbra Sword to Vile would bring trouble to his realm , foreshadowing Umbra ' s escape and the creation of the floating city Umbriel . Despite being of use to Vile , he has been known to bore or annoy the Prince , driving him to abandon him in the Fourth Era . Umbra . Originally created as the Umbra Sword , Umbra is either a part of Vile that gained its own sentience within the sword , by accident or design , or a being that Vile somehow trapped within the sword . It ultimately broke free of Vile ' s will , creating a body for itself but remaining trapped within Vile ' s Realm . In order to escape , it forged a pact with the Dunmer mage Vuhon , providing the power necessary to create the floating city Umbriel . Artifacts . Thanks to his penchant for deals and gifts with mortals , Vile has a large number of Daedric Artifacts associated with him . These are listed below . Bitter Cup . The Bitter Cup is an artifact associated with Clavicus Vile , and is known for being highly sacred to his followers . It was believed lost in the ruins of Ald Redaynia . It is possible that it was recovered by the Nerevarine in the Third Era . Feyfolken . A piece of fiction written by Waughin Jarth tells a story of a scribe and his enchanted quill , Feyfolken . The quill was a gift from Clavicus , which gave a great benefit to the owner , but sooner or later the owner was doomed to always use the quill and could not be separated from it . When that finally happened , Clavicus took the quill back from the owner along with his soul . Masque of Clavicus Vile . Originally made from a deal between Vile and a disfigured noblewoman , the Masque makes its wearer more persuasive , and has been seen around Tamriel throughout the Third and Fourth Eras . Rueful Axe . The Rueful Axe was allegedly given to a wizard named Sebastian Lort , who asked Vile for a way to cure his daughter ' s lycanthropy . It later found its way into Vile ' s possession as a gift for his champions . Umbra Sword . The Umbra Sword was created by Naenra Waerr to trap souls , at Clavicus Vile ' s request . As part of the creation process , Vile embued it with part of his essence . Over time , the part of Vile within the sword became a sentient being with its own will , calling itself Umbra . Eventually , Umbra broke free of the sword , creating a body for itself . A fragment of Vile may remain attached to the sword , meaning it still traps souls even in Umbra ' s absence . History . Second Era . N ' Gasta and Cyrus . Circa 2E 896 , Clavicus is recorded dealing with N ' Gasta , the Sload Necromancer of Stros M ' kai . N ' Gasta created " Soulsnare , " which gathered lost souls . The Daedric Prince Clavicus Vile granted N ' Gasta favors with every soul sent to him . Cyrus the Redguard hero , in his desperate quest to find his sister , managed to destroy N ' Gasta by using the Flask of Lillandril . Using N ' Gasta ' s Necromancy Book , he performed a ritual to transport himself to Clavicus ' realm in Oblivion . In order to make a gate to Oblivion appear , Cyrus had to mix Orc ' s blood with Amber ( jacinth – rising sun ) , mix the Unicorn ' s horn with Hist Sap ( snow – grass ) , mix the Daedra ' s heart with Ectoplasm ( night - mid - day sky ) and then poured the mixtures on the symbol in the center of the N ' Gasta ' s room , in that order . Then a gate appeared . Cyrus went through the gate and was taken to Clavicus ' realm . Then he dealt with Clavicus , who was the holder of his sister ' s soul . Expecting to get back his sister ' s soul , Cyrus gave the Flask of Lillandril , but instead Clavicus returned with a riddle . If Cyrus could answer it he might get back his sister ' s soul , but if he failed Cyrus ' own soul would be Clavicus ' . Cyrus answered him correctly and retrieved his sister ' s soul . Third Era . Hero of Daggerfall . The masque was owned by the Agent of Daggerfall , sometime around the year 3E 410 . Vile asked the hero to slay a certain werewolf . After the deed was done , the hero was rewarded with the masque . The Hero of Kvatch and Umbra . Circa 3E 433 , the Hero of Kvatch approached the Shrine of Clavicus Vile and managed to deal with the Prince . Clavicus asked the champion to procure Umbra . Clavicus claimed that the sword contains the soul of a hero he had been dealing with sometime before , and wanted to finish it . For procuring Umbra , Clavicus offered his Masque to the champion . The hound statue of Clavicus jumped into the champion ' s bag , and introduced itself as Barbas . It claimed that it would be best if Clavicus were not to receive the sword from the champion at all . Somehow returning the Umbra Sword to Clavicus would be a mistake , likely to cause great ruin to Clavicus ' domain . Barbas also states that whenever Clavicus deals with Umbra , nothing good ever comes of it . Vampires . The " Manifesto Cyrodiil Vampyrum " notes that Clavicus altered the Vampire blood of the Cyrodilic vampires , enabling them to walk in daylight , and more importantly , blend into mortal society undetected , and rule it from within — if they were well fed . The details of the contract forged between Vile and the Vampyrum Order is unknown . Fourth Era . Umbriel Crisis . Some time prior to 4E 40 , Umbra stole a part of Vile and negotiated with the Dunmer mage Vuhon to create Umbriel , a floating city , out of a fragment of Vile ' s realm . This allowed Umbra to escape Vile ' s grasp . Sul and prince Attrebus retrieved Umbra sword to defeat Vuhon and save Tamriel from Umbriel ' s threat . However , they were trapped in Sathil castle ' s dungeons by Nirai Sathil . Sul sensed that he could use Umbra to open a portal to Vile ' s realm . Yet , they were summoned by Vile before they could try anything . They were greeted by Barbas , who guided them to Vile . Vile demended Sul to give him the sword , but Sul offered a compact . He offered to stop Umbriel and return it back to Vile ' s realm . Clavicus Vile wanted a deal , so Sul offered his soul . Before Sul could end up his proposal , Attrebus told Vile that they wouldn ' t be any conditions , Vile needed their help as much as they needed his help . Vile accepted the deal and teleported them to his shrine in Cyrodiil . Attrebus and Sul managed to enter Umbriel . Mere - Glim guided them to the ingenium , and Attrebus wielded Umbra to destroy it . Right immediately , Vile possessed Attrebus . He was in power of Umbra again . Sul prayed the Daedric Prince to let Attrebus go , but Vile demanded a sacrifice . Sul attacked Vile , but he stabbed him with Umbra . With his last breath , Sul remembered the fury that had driven him for forty years and grabbed the hilt of Umbra . He pulled himself up the blade , and with everything left in him he struck Attrebus in the jaw . Attrebus dropped the sword , and Vile was expelled from his body . The Dragon Crisis . Barbas was estranged from Clavicus Vile in 4E 201 , and sought the Last Dragonborn unite him with Vile . The pair then traveled to Haemar ' s Shame , which was occupied by worshipers of Vile who had been plagued with vampirism . After disposing of the vampires , Vile then asks the Dragonborn to retrieve the Rueful Axe . Clavicus offers the axe to the Dragonborn in exchange for killing Barbas . If they do not , Clavicus will give his mask to them ; if they do so , Clavicus claims Barbas should have " picked a better friend . " Barbas will become part of the statue no matter which option the Dragonborn chooses .