It is a cursed Noble Phantasm where Atalanta possesses the power of the Magical Beast by wearing the pelt on her body. Rather than becoming a Monstrous Beast herself, wearing the pelt causes Atalanta to become a Monstrous Human. In exchange for sealing Tauropolos, all parameters except for Luck rises, and she gets a condition almost equivalent to a Berserker that possesses A Rank Mad Enhancement and an A Rank Transformation Skill, able to bestow various characteristics depending on the environment. She shows the ability to transform the pelt into bird wings and fuse with her bow to shoot arrows weaved from magical energy. The power is gained in exchange for losing her reason, and it can be possible to even become unable to discern the identity of her Master in certain situations. It can be said to equal self-destruction of the Servant if it is used, so, as it is impossible to utilize in a regular Holy Grail War, it can be said Phoebus Catastrophe is her only practical Noble Phantasm. Within all the Subcategory Holy Grail Wars, its usage by Atalanta was never once confirmed. She only utilizes it during the Great Holy Grail War after a number of circumstances drive her to use it.Within the anime adaptation, by shouting Tauropolos: Bow of Heaven (天穹の弓, Tenkō no Yumi?), she uses an attack similar to Phoebus Catastrophe, except it is not dedicated to either Artemis or Apollo. It is unknown if this is another Noble Phantasm or just a general attack.
When Atalanta is summoned in her Alter form, she is wearing the pelt by default though it is stated that once the pelt is peeled off, she will revert to her normal Archer self.
The Noble Phantasm was two separate Noble Phantasms in her original design displayed in Fate/complete material IV. The Disputed Spoils of War (諍いの戦利品, Isakai no Senrihin?) was the name of the pelt, and Agrius Metamorphosis, originally only called The Beast of Divine Punishment (神罰の野獣, Shinbatsu no Yajū?), was the act of donning the pelt over her body. The pelt itself granted the ability to travel long distances in a straight line at high speeds by releasing magical energy. Anyone within that line would enter into disorder and attack each other in confusion. The Beast of Divine Punishment granted the strength, endurance, and speed of the boar itself, along with the recovery of life force equating to the amount of damage dealt to the enemy.
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6
 Fate/Apocrypha material - STATUS: Archer of Red, p.034-035
Master: Shirou Kotomine
True name: Atalanta
Alignment: Neutral Evil
Noble Phantasm: C
■ Magic Resistance: D
One step (Single Action) spells are nullified.
Equivalent Magic Resistance as a magical energy repelling amulet.
■ Independent Action: A
Can act in the absence of a Master.
However, Master's backup is necessary if trying to use a Noble Phantasm that takes up a lot of magical energy.
■ Crossing Arcadia: B
While moving can jump over all obstacles, including opponents, on the field.
■ Aesthetics of the Last Spurt: C
Allows enemy to take the initiative and after confirming the action she can anticipate him.
■Phoebus Catastrophe: The Complaint Message on the Arrow
Type: Anti-Army Noble Phantasm
Maximum Amount of Targets: 100 People
A complaint letter on an arrow seeking the divine protection of Artemis and Apollo with the Tauropolos received from the Guardian Deity Artemis. In the next turn arrows will rain on all enemies as if a downpour. Range can be set.
■Agrius Metamorphosis: Boar of Divine Punishment
Type: Anti Unit (Self) Noble Phantasm
Max Targets: 1 Person
The Monstrous Beast of Calydonia that Atalanta killed. A cursed Noble Phantasm where one owns the power of the Monstrous Beast when she wears the pelt.
Even though Tauropolos is sealed, other than luck, all other stats rise. And an A Rank "Mad Enhancement" equivalent status is taken on.
The skill "Shapeshift: A" is added. In battle, the wearer's form, therefore nature, changes.
CLASS アーチャー■ 訴状の矢文
- ↑ 2.0 2.1 2.2 2.3 Fate/Grand Order material I - Atalanta, p.126-135
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7
 Fate/Apocrypha material - Encyclopedia: Boar of Divine Punishment [Noble Phantasm], p.154 [T]
Boar of Divine Punishment [Noble Phantasm]
Agrius Metamorphosis. The pelt of the Calydonian Boar, a Monstrous Beast which the virgin Goddess Artemis let loose upon the earth. It looks like a wild boar, but that is merely because the lifeform that was used as its basis just happened to be a boar. Just as depicted in the novels, if the pelt is worn by a person, they will become a Monstrous Human rather than a Monstrous Beast.
It grants power equivalent to that of A rank Mad Enhancement and grants an A rank Transformation skill, bestowing various characteristics depending on the environment. In exchange, the wearer loses their reason and, depending on the situation, becomes unable to discern and identify even their Master. It is a Noble Phantasm whose use pretty much equals self-destruction, and its use has never been confirmed in any of the subspecies Holy Grail Wars.
However, even the author himself couldn’t help having doubts about how it transformed into bird wings for Atalanta, fused with her bow and shot arrows weaved out of prana. Was it supposed to be like the T virus or something? (TL Note: The last line is a Resident Evil reference.)
- ↑ 4.0 4.1
 Fate/complete material IV: Extra material - Fate/Apocrypha - Atalanta, p.312-313
Atalanta, the Chaste Huntress
Born in the natural paradise Arcadia, she speaks in an old fashion. She was abandoned in the mountains immediately after birth, and survived by being nurtured by a female bear, sacred beast of the goddess Artemis. She has the same egotism and view on life and death as a wild animal, so it is natural to her to steal food to live. However, she will help any child left behind as much as she can, as gratitude for the care she received herself. Her wish to the Holy Grail is for a world where every child can be raised with love.
- Source：Greek mythology
- Alignment：Neutral Evil
- Armament: Bow
Illustrations: Genji Asai
Creator: Myougaya Jinroku
Though she was born as the princess of Arcadia, Atalanta was abandoned in the mountain, but she survived thanks to divine protection from Artemis. In gratitude, she is a fervent follower of Artemis. She grows into an excellent huntress, and accompanies the Argonauts. She is most known for the hunt of the Calydonian boar. She then returned to her birth land, but her father, who never had a son, commanded her to get married. As she had pledged a vow of virginity to the goddess, she proclaimed "I will only marry one who can beat me in a footrace. Those who lose will be killed." She tore through a great number of challengers, but at last, she lost when she was tricked into picking up irresistible golden apples thrown in front of her, and she had to break her vow.
- STR: D
- CON: E
- AGI: A
- MGI: B
- LCK: C
- Noble Phantasm: C
- Crossing Arcadia
Can move while jumping over all kinds of obstacles on the field, including enemies.
"Arcadia, my far-away homeland, I shall jump stone by stone across the steep mountain range that lead to you."
- Aesthetics of the Last Spurt
Can anticipate the enemy by letting him take the initiative and then confirming his actions. Even in footraces, she always made her opponent run ahead.
"Go ahead. I shall pass in front of you afterward like a squall."
- The Golden Apple
Draws the enemy near by displaying a treasured item.
"Look, this is the fruit of fate. This glorious treasure once sparked the burning of Troy. Come closer if you wish for it."
- The Disputed Spoils of War
A boar's pelt (with head attached) attained as booty of the Calydonian Boar Hunt. By releasing magical energy, high-speed traveling long distances in a straight line becomes possible. While moving, characters in the traveled route enter in disorder and start killing each other by mistake. When the king of Calydon forgot the offerings to Artemis in a harvest festival, the angry goddess let this boar loose over the land. The hero of Calydon who loved Atalanta, Meleager, finished it off, but because Atalanta refused his wishes of handing over the achievement, the concerning fate of said achievement brought discord to the country.
- The Complaint Message on the Arrow
By sending a letter affixed to an arrow requesting divine protection with the "Celestial Bow" received from the guardian deity Artemis, in the next turn a rain of arrows will downpour and perform an attack on all units.
The letter on the arrow will randomly reach either Artemis or Apollo. If it reaches Artemis then all women will become targets, while if it reaches Apollo all men will be targeted. This Noble Phantasm is associated with the episode in which Artemis and Apollo shot to death all the children of the fertile woman Niobe, because she boasted that she was greater than their mother Leto because "Leto had fewer children".
- The Beast of Divine Punishment
The condition in which "The Disputed Spoils of War" is clad over the body comfortably from the head and power of the Calydonian Boar is made one's own possession. Offensive power, defensive power and movement capacity are raised and one's life-force can be recovered about just as much as the damage dealt to the enemy. The wild boar dispatched by Artemis divine punishment was both giant as a mountain and brutal and attempted to completely devour the crops of the city-state Calydon. The power attained through this Noble Phantasm is the Calydonian Boar itself, which was not stopped without making victims even after brave warriors from all over Greece were called.
- The Seven Arrows of the Big Dipper
Meteor arrows that rain incessantly from the "seven stars of the Ursa Major" in heavens. 7 consecutive attacks are possible. Only in the first strike the target can be designated arbitrarily, and thereafter the attacks converge at said target. Fundamentally, the target cannot be altered, but if said target dies in middle of the attack, the remaining number of strikes will be divided among different targets on that location at random. The Ursa Major is Callisto, one of the nymphs that serve Artemis who had her figure transformed as divine punishment for breaking the vow of chastity and later was raised to a constellation. Really, Artemis is a goddess with a deep connection to bears.
- 諍いの戦利品 - 威力：小
- 訴状の矢文 - 威力：小
- 神罰の野猪 - 威力：中
- 北斗の七矢 - 威力：大
 Fate/Apocrypha material - Encyclopedia: Archer of “Red” [Servant], p.148-149 [T]
Archer of “Red” [Servant]
One of the Servants of the Red camp. A huntress who wears beautiful green clothing. Her charm points consists of those things on her head that look like animal ears and that thing on her lower back that looks like a tail.
Her true name is Atalanta. She is a huntress who is famous for her swift feet in Ancient Greek legend. Just as told in the original myth, she has the tragic past of being born as the daughter of a king and yet being abandoned in the mountains by her father. After being raised by a female bear and later adopted by a hunter who treaded into the mountains, she has developed her skills conspicuously, perhaps due to her latent talent.
There are three tales that she is famous for. The first is how she was chosen as a member of the Argonauts led by Jason.
The second is the extermination of the Calydonian Boar. The third is the dispute over her marriage. None of these tales had a particularly happy ending for her, and her distrust of men became extremely strong due to the third one in particular as well.
After all, to Greek warriors at the time, battle was both an offering to the gods and a way of trampling over others. Atalanta liked none of them since these warriors acted more violent than necessary when they hunted. However, there was one man named Peleus who she was fond of, for he was the only one who approached her with a humble attitude.
The reason she is obsessed over children is due to her own origins. The despair she felt as a baby was just that strong. She would happily throw away her own life to become a stepping stone to realizing a world where all children are saved.
The reason she cooperated with Shirou is also because she clung to the idea that his wish would lead to her own wish. Since it is uncertain whether the Holy Grail would be able to grant her wish, his words which spoke of a clear form of salvation might have seemed just like the gospel to her.
She has two Noble Phantasms, but one of them would normally be impossible to use in a regular Holy Grail War, so practically speaking, her only Noble Phantasm is “Phoebus Catastrophe: Complaint Message on the Arrow”.
Her animal ears and tail seem to be the symbols and after-effects of a curse told of in her legend… or so they should have been, but she actually seems to like them.
- ↑ Yuuichirou Higashide's Tweet -7:09 AM - 9 Dec 2017