Satella

Satella (サテラ) is the Witch of Envy responsible for the Great Calamity 400 years ago who is currently sealed underneath the Pleiades Watchtower. In reality, the Witch of Envy (嫉妬の魔女) is a separate personality that formed when she took in incompatible Witch Factors. Satella formally debuted in Arc 4 as a supporting character, whilst the Witch serves as an overarching antagonist throughout the series.

She possesses a yet-unexplained connection to both Subaru and Emilia, and was also the one who gave Subaru Return by Death. Throughout the series, the Witch silences Subaru whenever he attempts to talk about his ability. Satella herself did not debut until Arc 4, where she and the other witches helped Subaru accept himself and change his views on Return by Death.

Appearance
Satella has a thin body with long silver hair and purple blue eyes. When Subaru encountered her at Echidna's tea party, she wore a black dress made of shadows that seemed to wave in accordance with her heartbeat. Initially, he was unable to see her face because of a black shadow covering her above her neck, which was created out of his reluctance to accept her, however he later accepts her and becomes able to see her face, mentioning afterward that she looked exactly the same as Emilia.

Personality
Contrary to popular belief, Satella and the Witch of Envy are separate personalities, formed when she took in incompatible Witch Factors. The two personalities tend to fight each other. Both personalities love Subaru, though the Witch of Envy personality is much more aggressive about it, while Satella is much more reasonable and cares deeply about his well-being.

History
400 years earlier, Satella absorbed Envy Witch Factors she had no compatibility with, resulting in the creation of her Witch of Envy personality. However, this alternate personality was not the reason for her subsequently going out of control and killing countless innocent people and nearly destroying the world. Despite the efforts of many, including the Dragon, the Sword Saint, and the Sage, Satella was unable to be killed and was instead sealed in a shrine that is watched over by Shaula.

Abilities
Authority of Envy (嫉妬の権能 Shitto no Ken'nō): Satella is able to use the Authority of Envy.
 * Although the abilities of the Authority of Envy haven't been revealed, in the Web Novel, Minerva mentioned during the Witches' Tea Party that Satella might direct her jealousy (妬み Netami) toward her if she stepped in between her and Subaru, suggesting that it's something that affects people remotely.

Shadow Control: Satella is able to control shadows, though it's unknown whether this is a part of her Authority of Envy. They erode or destroy all life and matter around her as well as taking abstract things like thoughts and sometimes even memories and mixing them together. It's also shown that she's capable of manipulating someone's feelings and emotions, amplifying or fabricating them to her own liking. In Arc 7, Beatrice suggests that her Shadows might have something to do with Shamac as the're able to separate a person from their mind, similarly to how Shamac works. In addition, she was the one who teleported Subaru, Rem and Louis to the Empire.


 * Satella is able to create shadow tendrils which she uses to capture, impale and decimate her enemies. The tendrils are strong enough to hold transformed Garfiel in the air and incapacitate him. She is also able to slip the shadows into someone's body through wounds and disperse them outwards, effectively destroying the opponent from the inside out.


 * In some instances, she can also be seen creating hands from her shadows, similarly to the Unseen Hand ability of Petelgeuse Romanee-Conti that comes from the Authority of Sloth, gripping Subaru's heart whenever he speaks about his ability to anyone who isn't her. According to Puck, Satella was capable of manifesting over one-thousand shadow hands. She can also make the hands can also go intangible.
 * In the instances in which she has appeared even though still sealed, just showing up has caused the entire area she was in, to be completely enveloped in Shadows. After covering the area in Shadows, Witch of Envy then began absorbing everything around her–the more she absorbs the more mass her vortex of shadows gains.

Time Manipulation: The Witch of Envy had the power to manipulate the flow of time to a certain extent. She could reverse the flow of time at least several days back and could freeze time indefinitely. The Witch could control who had perception of the shifts in time, as her beloved Natsuki Subaru could register and quantify whenever she manipulated the flow around him. Her power of time manipulation was most keenly demonstrated in the "Return by Death" ability that she had bestowed on Natsuki upon his arrival to her world. Every time he tried to tell anyone about his power, the Witch would freeze time around Natsuki while she punished him, displaying impressive chronokinetic ability despite being locked away in her imprisonment.It is unknown whether this is part of her Authority of Envy or a completely different ability.

Possession: Similarly to the Sin Archbishop of Sloth Petelgeuse Romanee-Conti, Satella had the capability to transfer her soul into another individual's body. From the inside, the Witch of Envy would overwrite the body's soul, essentially killing the essence of whomever her victim was and allowing her to take full motor control of what was left behind. Despite the body not belonging to her, Satella was still able to use her powers while possessing a person. However, any body that the Witch inhabited could hypothetically be destroyed unlike her actual body that was completely immortal. The Witch was able to temporarily leave her imprisonment by possessing a person, a capability she demonstrated when she used the body of Emilia to rampage within the Sanctuary.

Teleportation: She was capable of teleportation to the point of planetary travel, evidenced by when she transported Subaru across the universe to her world.

Yin Magic User: According to Beatrice, the Witch of Envy is able to use Yin Magic. She presumably used a very advanced version of Shamac to split space and teleport Subaru, Rem and Louis to the faraway lands of the Empire. Also, according to Beatrice, the spell was a clump of Yin Magic akin to Shamac that was given a direction.

Miasma: The Sealing Stone Temple where Satella is sealed is covered in Satella's Miasma, which is so thick that it distorts everything in one’s view. The Miasma invades the minds of anyone it touches, annihilates their flesh, and corrupts their soul. During one of the failed loops of Arc 6, Subaru, Ram, Anastasia and Patrasche fell victim to the Witch's Miasma, going mad and killing each other in a bloody spectacle of betrayal.

Immortality: Satella, for unexplained reasons, never physically aged past her prime and as such never withered with the passage of time. She didn't need to eat or drink to sustain herself and there was no known illness that could end her life. Furthermore, although she could be injured and defeated, her body couldn't be destroyed by any external force. Even the Sage Flugel, who was said to be all-knowing, could not conceive a method to bring about Satella's death. Her immortality couldn't be bypassed by even the first Sword Saint Reid Astrea, the Divine Dragon Volcanica, and the Sage Flugel, eventually resulting in her being sealed away. It is unknown whether her immortality is part of her Authority of Envy or a completely different ability. By the time of Subaru's summoning, Satella has been alive for over four-hundred years.

Trivia

 * According to the author, the meaning behind Satella's name will be revealed in the final arc.
 * According to the author, Satella lacks common sense, and the situation is so serious that her dictionary doesn't even have the word common sense.
 * According to the author, if Satella and Reinhard van Astrea were to fight it would end in a stalemate as she wouldn't be able to land a finishing blow whereas Reinhard couldn't bypass her immortality.
 * In the anime, Satella received a redesign by Otsuka Shinichirou.
 * Subaru has said the exact same phrase he said to Emilia in episode 1, to Satella at the end of the tea party, with the exact phrase being "I will save you no matter what". In Japanese:-『俺が、必ず――お前を、救ってみせる. 』
 * The author once stated that Satella is the second tallest of the witches.
 * Although Echidna initially stated that she and the other five witches were all killed by the Witch of Envy and "used them as sustenance", it is later revealed that their deaths, with the exception of Minerva, were uninvolved with the Witch of Envy.

Navigation
Satela 莎提拉