Mysterious Heroine X

This is a Limited Servant

They are only available during special summoning campaigns. When no such campaigns are active, this Servant cannot be summoned.

This article is about 5★ Mysterious Heroine X. For other variations, see Artoria (Disambiguation).

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★ ★ ★ ★ ★

Mysterious Heroine X

Japanese Name: 謎のヒロインX
AKA:AKA:Also Known As Heroine XHeroine XBattle Name, MHX, A-X, Mysterious Racer XMysterious Racer XDead Heat Summer Race
ID: 86	Cost: 16
ATK:ATK:Servant's minimum and maximum attack stat without Status Up Cards. 1,817/11,761	HP:HP:Servant's minimum and maximum HP (Health) without Status Up Cards. 1,862/12,696
Lv.100 Grail ATK:Lv.100 Grail ATK:Servant's maximum attack stat with Holy Grail at Lv.100 without Status Up Cards. 12,874	Lv.100 Grail HP:Lv.100 Grail HP:Servant's maximum HP (Health) with Holy Grail at Lv.100 without Status Up Cards. 13,909
Lv.120 Grail ATK:Lv.120 Grail ATK:Servant's maximum attack stat with Holy Grail at Lv.120 without Status Up Cards. 15,112	Lv.120 Grail HP:Lv.120 Grail HP:Servant's maximum HP (Health) with Holy Grail at Lv.120 without Status Up Cards. 16,347
Voice Actor: Kawasumi Ayako	Illustrator: BUNBUN
Attribute: Star	Growth Curve: Linear
Star Absorption: Star Absorption: Tooltip for 25px|bottom|link= Star Absorption:ⓘAffects how many critical stars this servant gets when the stars are distributed. 98	Star Generation: Star Generation: Tooltip for 25px|bottom|link= Star Generation:ⓘAffects how many critical stars this servant generates when attacking. 25.6%
NP Charge ATK: NP Charge ATK: Tooltip for 25px|bottom|link= NP Charge ATK:ⓘAffects how much the NP Gauge is increased by when attacking enemies. 0.81%	NP Charge DEF: NP Charge DEF: Tooltip for 25px|bottom|link= NP Charge DEF:ⓘAffects how much the NP Gauge is increased by when being attacked. 4%
Death Rate: Death Rate: Tooltip for 25px|bottom|link= Death Rate:ⓘChance of this servant being killed by the 'Instant-Kill' effect, lower numbers are better. Note that this rate is ONLY affect to player side. Enemy Servant has basically quite low rate. (0% ~ 1%) 38.5%	Alignments: Chaotic・Good
Gender: Female
Basic Traits: Arthur, Artoria Face, Costume-Owning, Dragon, Enuma Elish Nullification, Hominidae Servant, Humanoid, King, Riding, Servant, Seven Knights Servant, Spaceflight-able Servant
Hits:  44  |  22  |  11  |  44

Active Skills	Passive Skills	Append Skills	Noble Phantasm	Ascension
Skill Upgrade	Stats	Bond Level	Biography	Trivia

Active Skills

• First Skill
• Second Skill
• Third Skill

• Fire Support XEX EX
• Fire Support EX

Upgrades after Strengthen 2, Replace Fire Support EX

	Fire Support XEX EX
Reduce all enemies defense for 3 turns. 500% Chance to grant self Delayed buff for 1 turn. (Chance to Stun all enemies for 1 turn after 1 turn.)
Level	1	2	3	4	5	6	7	8	9	10
Defense -	10%	11%	12%	13%	14%	15%	16%	17%	18%	20%
Stun Chance +	60%	62%	64%	66%	68%	70%	72%	74%	76%	80%
Cooldown	9					8				7

Available from the start

	Fire Support EX
500% Chance to grant self Delayed buff for 1 turn. (Chance to Stun all enemies for 1 turn after 1 turn.)
Level	1	2	3	4	5	6	7	8	9	10
Stun Chance +	60%	62%	64%	66%	68%	70%	72%	74%	76%	80%
Cooldown	10					9				8

• Star of Saber C++
• Instinct C+

Upgrades after Strengthen 1, Replace Instinct C+

	Star of Saber C++
Grants self Invincibility for 1 turn. Gains critical stars.
Level	1	2	3	4	5	6	7	8	9	10
Stars +	10	11	12	13	14	15	16	17	18	20
Cooldown	7					6				5

Unlocks after 1st Ascension

	Instinct C+
Gains critical stars.
Level	1	2	3	4	5	6	7	8	9	10
Stars +	4	5	6	7	8	9	10	11	12	14
Cooldown	7					6				5

• Galaxy Meteor Sword XEX A
• Galaxy Meteor Sword C

Upgrades after Saber Wars II or Interlude 4, Replace Galaxy Meteor Sword C

	Galaxy Meteor Sword XEX A
Increases own critical star generation rate against Saber enemies for 3 turns. Increases own damage against Saber enemies for 3 turns. Increases own attack for 3 turns.
Level	1	2	3	4	5	6	7	8	9	10
vs. Saber Star Rate +	50%	55%	60%	65%	70%	75%	80%	85%	90%	100%
vs. Saber Damage +	30%	32%	34%	36%	38%	40%	42%	44%	46%	50%
Attack +	10%	11%	12%	13%	14%	15%	16%	17%	18%	20%
Cooldown	8					7				6

Unlocks after 3rd Ascension

	Galaxy Meteor Sword C
Increases own critical star generation rate against Saber enemies for 3 turns. Increases own damage against Saber enemies for 3 turns.
Level	1	2	3	4	5	6	7	8	9	10
vs. Saber Star Rate +	50%	55%	60%	65%	70%	75%	80%	85%	90%	100%
vs. Saber Damage +	30%	32%	34%	36%	38%	40%	42%	44%	46%	50%
Cooldown	8					7				6

Passive Skills

1		Riding EX
	Increases own Quick performance by 12%.
2		Cosmo Reactor A
	Increases own critical star generation rate by 10%.

Append Skills

• First Skill
• Second Skill
• Third Skill
• Fourth Skill
• Fifth Skill

Unlocks by consuming Servant Coins

	Extra Attack Finesse Improvement
Increases own Extra Attack performance.
Level	1	2	3	4	5	6	7	8	9	10
Extra Attack +	30%	32%	34%	36%	38%	40%	42%	44%	46%	50%

Unlocks by consuming Servant Coins

	Mana Loading
Starts battle with NP gauge charged.
Level	1	2	3	4	5	6	7	8	9	10
NP +	10%	11%	12%	13%	14%	15%	16%	17%	18%	20%

Unlocks by consuming Servant Coins

	Anti-Saber Attack Damage Aptitude
Increases own attack against Saber enemies.
Level	1	2	3	4	5	6	7	8	9	10
vs. Saber Attack +	20%	21%	22%	23%	24%	25%	26%	27%	28%	30%

Unlocks by consuming Servant Coins

	Special Attack Finesse Improvement
Increases own critical damage.
Level	1	2	3	4	5	6	7	8	9	10
Crit Damage +	20%	21%	22%	23%	24%	25%	26%	27%	28%	30%

Unlocks by consuming Servant Coins

	Skill Reloading
Reduces the cooldown of the skill by 1 after activation for N times. (Once per skill) (N: Based on Skill Level.)
Level	1	2	3	4	5	6	7	8	9	10
Reduction Available Count +	1	1	1	1	1	2	2	2	2	3

Noble Phantasm

• Rank EX
• Rank A+
• Videos

Upgrades after Interlude 3

Secret Calibur
Sword of Unsigned Victory

Base Damage: x0.8	Rank	Noble Phantasm Type
	EX	Anti-Unit
	Hits	Per Hit Percentage
	12	5%, 7%, 5%, 7%, 5%, 7%, 5%, 7%, 5%, 7%, 5%, 35%
Effect	Deals damage to one enemy.
NP Level	1	2	3	4	5
Damage +	1600%	2000%	2200%	2300%	2400%
Overcharge Effect	Deals extra damage against Artoria Face enemies.
Charge	100%	200%	300%	400%	500%
vs. Artoria Face Extra Damage x vs. Artoria Face Extra Damage x Tooltip for 25px|link= vs. Artoria Face Extra Damage xⓘThis value deals 100% = 1.0x and multiplied by base NP Damage. For more information about damage formula, see Battle pages.	150%	162.5%	175%	187.5%	200%

Secret Calibur
Sword of Unsigned Victory

Base Damage: x0.8	Rank	Noble Phantasm Type
	A+	Anti-Unit
	Hits	Per Hit Percentage
	12	5%, 7%, 5%, 7%, 5%, 7%, 5%, 7%, 5%, 7%, 5%, 35%
Effect	Deals damage to one enemy.
NP Level	1	2	3	4	5
Damage +	1200%	1600%	1800%	1900%	2000%
Overcharge Effect	Deals extra damage against Artoria Face enemies.
Charge	100%	200%	300%	400%	500%
vs. Artoria Face Extra Damage x vs. Artoria Face Extra Damage x Tooltip for 25px|link= vs. Artoria Face Extra Damage xⓘThis value deals 100% = 1.0x and multiplied by base NP Damage. For more information about damage formula, see Battle pages.	150%	162.5%	175%	187.5%	200%

• Normal
• Old

Ascension

n°	Item 1	Item 2	Item 3	Item 4	QP
1st	55				100,000100,000
2nd	1212	1818			300,000300,000
3rd	55	22	88		1,000,0001,000,000
4th	1212	44	3636		3,000,0003,000,000
Mysterious Heroine Z	謎のヒロインXにとってすら謎な存在 セイバー飽和現象が生んだパラレルX		X from a parallel world born from the Saber saturation phenomenon, considered bizarre even by Mysterious Heroine X's standards.
	1010	55	55	55	3,000,0003,000,000

Skill Reinforcement

• Active
• Append

n°	Item 1	Item 2	Item 3	Item 4	QP
1st	55				200,000200,000
2nd	1212				400,000400,000
3rd	55				1,200,0001,200,000
4th	1212	44			1,600,0001,600,000
5th	55	88			4,000,0004,000,000
6th	1212	1212			5,000,0005,000,000
7th	1212	2424			10,000,00010,000,000
8th	3636	2424			12,000,00012,000,000
9th	11				20,000,00020,000,000

n°	Item 1	Item 2	Item 3	Item 4	QP
1st	55				200,000200,000
2nd	1212				400,000400,000
3rd	55				1,200,0001,200,000
4th	1212	1010			1,600,0001,600,000
5th	55	2020			4,000,0004,000,000
6th	1212	22			5,000,0005,000,000
7th	44	44			10,000,00010,000,000
8th	1111	1010			12,000,00012,000,000
9th	11				20,000,00020,000,000

Stats

Strength:Strength:Bodily might in terms of power. B	Endurance:Endurance:How much damage one can withstand. C
Agility:Agility:Quickness and speed of reaction. A+	Mana:Mana:How much magical energy can be handled. B
Luck:Luck:The quality of one's luck. D	NP:NP:The strength of the Noble Phantasm one owns. While the ranking will often match their strongest Noble Phantasm, it will sometimes only reflect a secondary Noble Phantasm, or display a ranking higher or lower than their available wares. A++

Bond Level

Bond Level	1	2	3	4	5	6	7	8	9	10
Bond Required	3,500	8,500	7,000	6,000	2,500	292,500	360,000	340,000	320,000	315,000
Total Bond	3,500	12,000	19,000	25,000	27,500	320,000	680,000	1,020,000	1,340,000	1,655,000
Rewards	55	55	55	55	55	55 33	2020 33	2020 33	2020 33	4040 Bond CE
Bond 10 Craft Essence				Annihilation List When equipped on Mysterious Heroine X: Increase party's damage against Saber enemies by 20% while self is on the field.
Chaldean Visionary Flames [?][?]Requirement to unlock Max Bond Capacity	11		12		13		14		15
	1,090,000		1,230,000		1,360,000		1,500,000		1,640,000
	2,745,000		3,975,000		5,335,000		6,835,000		8,475,000
Rewards	5050 3030		6060 3030		6060 3030		6060 3030		6060 3030

Biography

“ The one true "Wielder of the Holy Sword" has arrived from outer space. ”

Unlock	Description	Translation🛈🛈|nbx= for north american localization release and |bx = for fan english translation
Default	サーヴァント・ユニヴァースと呼ばれる 謎の時空から来訪したストレンジャー。 自らをセイバークラスの決定版と名乗り、 騎士として正々堂々と闇討ちを行う 対セイバー用決戦兵器。 コードネーム・Ａ－Ｘ。	NA TL NA Localization: The Servant Universe. That's where the stranger claims she's from. She calls herself "Saber: the Definitive Edition." Through a combination of fair duels and assassinations, she's the ultimate Anti-Saber weapon. Codename: A-X. Fan Translation: A Stranger that came visiting from a mysterious dimension called Servant Universe. Claiming to be the definitive edition of the Saber Class, an Anti-Saber Decisive Weapon that fair and square performs surprise attacks as a knight. Code Name: A-X.
Bond 1	身長／体重：154cm・42kg 出典：2013年エイプリルフール 地域：サーヴァント・ユニヴァース 属性：混沌・善　　副属性：星　　性別：女性 なぞのまけん『ひみつかりばー』でてきをみなごろしにするぞ。	NA TL NA Localization: Height/Weight: 154cm, 42kg Origin: April Fools Day, 2013 Region: The Servant Universe Alignment: Chaotic-Good Gender: Female I will kill everyone using my sword, the "Secret Calibur." Fan Translation: Height/Weight: 154cm・42kg Source: 2013's April Fools Region: Servant Universe Alignment: Chaotic・Good Attribute: Star Gender: Female Going to massacre the enemy with the mysterious magic sword "Secret-Calibur".
Bond 2	「アルトリア種は宇宙のガンのようなもの。 　誰かが刈り取らねばならないのです。 　誰かが」 苦渋に満ちた表情でそう残し、ヒロインXは故郷を後にした。愛機ドゥ・スタリオンⅡ号は今日も星の海を駆ける。	NA TL NA Localization: "Altria-Types are like a cancer on the world, someone must eradicate them, someone must..." With determination in her heart, Heroine X left her home and rides the Du Stallion II through the starry ocean. Fan Translation: "The Artoria Species are like a cancer of the universe. Someone has to reap them out." Leaving behind an expression full of bitterness, Heroine X departed from her hometown. In her favorite machine Dun Stallion II, she dashes across the sea of stars today as well.
Bond 3	その姿はおおよそサーヴァントらしからぬラフ＆スポーティな服装。青いマフラーは勇気の印、帽子はその正体とアホ毛を隠すためのものである。突き出てる突き出てるめっちゃ突き出てる。	NA TL NA Localization: Her look is too rough and sporty for a typical Servant. Her scarf is a symbol of courage, and her hat conceals her face and her ahoge. But it's still poking out, oh it's definitely poking out. Fan Translation: On the whole, her appearance is composed of rough & sporty garments unseemly for Servants. The blue muffler is a symbol of courage, while the cap is there to conceal her true identity and ahoge. It's sticking out. It's sticking out, it's really sticking out.
Bond 4	対セイバー用決戦兵器として、並み居るセイバーをひたすら打倒する我はこの一聖剣に賭ける修羅モードであるが、唯一セイバーリリィに対しては心を開いた。	NA TL NA Localization: As the Anti-Saber weapon, my only purpose is to defeat Sabers with my sword and my will. But, I opened up my heart to Saber Lily. Fan Translation: As an Anti-Saber Decisive Weapon, she displays a carnage mode that wagers that single holy sword for nothing but defeating all the present Sabers, but she opened her heart towards Saber Lily alone.
Bond 5	こちらにやってくるまでは古代王朝の危機を救ったり人類統合組合の内ゲバを解決したり他ユニヴァースからの侵略者たちを蹴散らしたりしていたが、そんなものは彼女にとって朝食前のデザートのようなもの。どうでもいい事なので覚えていないらしい。 真の悲願達成まで、彼女は今日もひみつかりばーを振るい続ける。あと黄金大帝コスモギルガメスは何があっても斬り捨てる。	NA TL NA Localization: Until she came here, she was saving an ancient dynasty, solving the internal quarrels of the Human Alliance Union, and dispersing intruders from other universes. However, she doesn't remember any of this, because to her, such deeds are ordinary. Until her long-time goal is achieved, she will continue to wield her Secret Calibur. She will also cut down the Golden Emperor, Gilgamesh, as many times as she needs to. Fan Translation: Before coming here, she saved an ancient royal dynasty from a crisis, settled the internal strife of the Mankind Integration Union and routed the invaders from another Universe, but for her that is like a dessert prior to breakfast. Since they are trivial, it seems like she does not remember about them. Until the achievement of her true, dearest wish, she shall continue to wield the Himitsucalibur. Also, no matter what, she will simply cut down the Golden Great Emperor Cosmo Gilgamesh.
Clear Interlude 1
Extra	誰にも打ち明けられないが、 その正体はアルトリア・ペンドラゴン。 完璧な変装に誰もが騙されたと思うが、 ネタバレになるのでどうか黙していてほしい。 本人の名誉のためにも……！	NA TL NA Localization: Don't tell anybody, but her true identity is Altria Pendragon. She thought her perfect disguise had tricked everyone. Please don't say anything about who she really is, for the sake of spoilers and her honor. Fan Translation: She has not revealed to anyone, but her true identity is that of Artoria Pendragon. She seems to think that everybody was tricked by her perfect disguise, but since it will turn into spoilers please keep it quiet. For the sake of her honor as well...!
April Fool	アルトリアサーヴァント 数あるサーヴァントの中でも最も元ネタが分からない。アルトリア種を根絶やしにするためにアルトリア遺伝子から作られた哀しき殺数兵器。	Artoria-Type Servant Of all the Servants to exist, her origin is the most mysterious. She's a mass-murdering weapon created from Artoria genes to eradicate all the Artoria-type Servants.

Availability

Mysterious Heroine X was available for summoning during the:

Saber Wars Event	Fes.2017～2nd Anniversary～Lucky Bag	2018 New Year Campaign Lucky Bag
Saber Wars Event Re-run	Fes.2018～3rd Anniversary～Lucky Bag	New Year Lucky-Bag Summoning Campaign 2019
Fate/Grand Order Fes. 2019 ～4th Anniversary～ Lucky Bag Summoning Campaign	Saber Wars II Pre-Release Summoning Campaign	New Year Lucky-Bag Summoning Campaign 2020
Fate/Grand Order ～5th Anniversary～ Lucky Bag Summoning Campaign	Lucky Bag 2021 Summoning Campaign New Year Special	Saber Wars II Rerun Summoning Campaign 2
Fate/Grand Order ～6th Anniversary～ Lucky Bag Summoning Campaign	Lucky Bag 2022 Summoning Campaign New Year Special	～7th Anniversary～ Lucky Bag & Daily Summoning Campaign
Lucky Bag 2023 Summoning Campaign New Year Special	Evocation Festival Part 2 Summoning Campaign

Trivia

• She shares the exact HP values at both minimum and maximum with Jack the Ripper and Okita Sōji (Alter).
• She shares the exact HP values at minimum with Oda Nobunaga, Tristan, Altera the San(ta), Yan Qing and Mochizuki Chiyome.
• NP Rank (Pre-NP Interlude) changed from A++ to A+ on 9 August 2017 update.
• She received Battle Animation and Sprite Update on Saber Wars Event Re-run, 15 March 2018 Update.
• She's the second Assassin to lack the Presence Concealment passive skill after Mata Hari.
• She's the first Servant to have all her skills and NP fully upgraded.
• Mysterious Heroine Z is the antagonist of the Saber Wars Event. She is an NPC and enemy version of Mysterious Heroine X. She is currently obtainable as Costume Dress.