Cu Chulainn

Table of Contents

• Status
• Analysis
• Profile

Servant Skills

Guts

Battle Continuation A

Apply Guts to self (1 time, 5 turns).

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Lvl	1	2	3	4	5	6	7	8	9	10
Revives with HP	1000	1150	1300	1450	1600	1750	1900	2050	2200	2500
CD	9	9	9	9	9	8	8	8	8	7

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Available from the start

Guts

Ath nGabla A

Apply Guts to self (1 time, 5 turns).
Increase own ATK based on remaining HP (3 turns).
ATK [+20%-50%] = 20% + (1 - HP / Max HP) * 30%

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Lvl	1	2	3	4	5	6	7	8	9	10
Revives with	1000 HP	1150 HP	1300 HP	1450 HP	1600 HP	1750 HP	1900 HP	2050 HP	2200 HP	2500 HP
CD	8	8	8	8	8	7	7	7	7	6

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Upgrades via Rank Up 2 (Available 7/8/2022)

Evade

Protection from Arrows B

Apply Evade to self (3 times).
Increase own DEF (3 turns).

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Lvl	1	2	3	4	5	6	7	8	9	10
Defense +	8%	8.8%	9.6%	10.4%	11.2%	12%	12.8%	13.6%	14.4%	16%
CD	7	7	7	7	7	6	6	6	6	5

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Unlocks after 1st Ascension

Debuff Clear

Disengage C

Remove own Debuffs.
Recover own HP.

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Lvl	1	2	3	4	5	6	7	8	9	10
Heal +	500	600	700	800	900	1000	1100	1200	1300	1500
CD	7	7	7	7	7	6	6	6	6	5

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Unlocks after 3rd Ascension

Append Skills

Special ATK

Extra Attack Boost

Increase own Extra Attack Card effectiveness.

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Lvl	1	2	3	4	5	6	7	8	9	10
Extra ATK Eff +	30%	32%	34%	36%	38%	40%	42%	44%	46%	50%

Start Np

Load Magical Energy

Begin battle with NP Gauge charged.

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Lvl	1	2	3	4	5	6	7	8	9	10
Start NP +	10%	11%	12%	13%	14%	15%	16%	17%	18%	20%

Dmg Up

Anti-Berserker (ATK Up)

Deal extra Special ATK damage to [Berserker] class enemies.

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Lvl	1	2	3	4	5	6	7	8	9	10
Special ATK +	20%	21%	22%	23%	24%	25%	26%	27%	28%	30%

Class Skills

Magic Resistance C

Increase your Debuff Resist by 15%.

Divinity B

Apply Damage Plus for yourself (Total Card Damage +175).

Noble Phantasm

Gae Bolg B

Deal significant damage to a single enemy.

<Overcharge>

Decrease DEF for a single enemy (3 turns).
Medium chance to inflict Death.

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Gae Bolg

Barbed Spear that Pierces with Death

	Rank	Classification	Hit-Count
	B	Anti-Personnel	1

Effect	Deal significant damage to a single enemy.

Level	1	2	3	4	5
Damage +	1200%	1600%	1800%	1900%	2000%

Overcharge Effect	Decrease DEF for a single enemy (3 turns). Medium chance to inflict Death.

Charge	100%	200%	300%	400%	500%
Defense -	10%	15%	20%	25%	30%
Death Chance	50%	62.5%	75%	87.5%	100%

Gae Bolg (Upgrade 1) B+

Upgrade via Rank Up Quest 1

Deal significant damage to a single enemy.
Apply Sure Hit for yourself (1 turn).

<Overcharge>

Chance to cause instant death.
Reduces defense (3 turns).

Show Info

Gae Bolg (Upgrade 1)

Barbed Spear that Pierces with Death

	Rank	Classification	Hit-Count
	B+	Anti-Personnel	1

Effect	Deal significant damage to a single enemy. Apply Sure Hit for yourself (1 turn).

Level	1	2	3	4	5
Sure Hit
Damage +	1600%	2000%	2200%	2300%	2400%

Overcharge Effect	Chance to cause instant death. Reduces defense (3 turns).

Charge	100%	200%	300%	400%	500%
Defense -	10%	15%	20%	25%	30%
Death Chance	60%	70%	80%	90%	100%

Assorted Info

Attack / HP Growth

Stat Ratings

Interlude Quests

Quest	Requirements	Reward
✔ Interlude Chapter Completion: Septem	Ascension: 1 Bond: 1
✔ Rank Up 1 Chapter Completion: Fuyuki	Ascension: 4 Bond: 0
✔ Rank Up 2 Chapter Completion: Fuyuki	Ascension: 4 Bond: 0	Skill 1

Ascension Materials

Stage	Cost	Materials
2	30,000	x4 Lancer Piece
3	100,000	x8 Lancer Piece x3 Claw of Chaos
4	300,000	x4 Lancer Monument x8 Seed of Yggdrasil x4 Octuplet Crystals
Max	900,000	x8 Lancer Monument x7 Octuplet Crystals x7 Phoenix Feather

Skill Enhancement Materials

Level	Cost	Materials
1 → 2	50,000	x4 Gem of Lancer
2 → 3	100,000	x8 Gem of Lancer
3 → 4	300,000	x4 Magic Gem of Lancer
4 → 5	400,000	x8 Magic Gem of Lancer x4 Seed of Yggdrasil
5 → 6	1,000,000	x4 Secret Gem of Lancer x8 Seed of Yggdrasil
6 → 7	1,250,000	x8 Secret Gem of Lancer x2 Claw of Chaos
7 → 8	2,500,000	x4 Claw of Chaos x12 Proof of Hero
8 → 9	3,000,000	x36 Proof of Hero x13 Phoenix Feather
9 → 10	5,000,000	x1 Crystallized Lore

Append Skill Materials

Level	Cost	Materials
1 → 2	50000	x4 Gem of Lancer
2 → 3	100000	x8 Gem of Lancer
3 → 4	300000	x4 Magic Gem of Lancer
4 → 5	400000	x8 Magic Gem of Lancer x2 Primordial Lanugo
5 → 6	1000000	x4 Secret Gem of Lancer x4 Primordial Lanugo
6 → 7	1250000	x8 Secret Gem of Lancer x2 Heart of the Foreign God
7 → 8	2500000	x3 Heart of the Foreign God x4 Divine Leyline Spiritron
8 → 9	3000000	x12 Divine Leyline Spiritron x10 Reactor Core of Dawn
9 → 10	5000000	x1 Crystallized Lore

Total Materials Required

Costume Dress Materials

Bond CE

Star of Prophecy

When equipped on Cu Chulainn,
Increase your NP Strength by 30%.
30% Chance to increase critical damage by 10% when attacking (3 turns).

Table of Contents

• Status
• Analysis
• Profile

Overview

“Your heart is mine! Gáe Bolg!”

Despite the ‘Lancer is dead’ memes, Ireland’s Child of Light is easily one of the game’s hardiest Servants. While Cu Chulainn’s defensive kit may seem to conflict with his damaging Quick NP at first glance, this mix of staying power and capability to output single-target damage makes him one of the best Servants in the game in regards to solo or last stand performances.

Aside from the powerful Protection from Arrows skill, what makes Cu Chulainn uniquely powerful is that his two other skills are also survival-oriented. Battle Continuation provides Guts and Disengage provides healing and cleanses Cu of any debuffs, letting him cycle through his defensive cooldowns and minimize his moments of vulnerability. Gae Bolg meanwhile provides an offensive dimension to Cu Chulainn with its single-target nature and defense debuff, though its instant kill potential is utterly unreliable even at best. After its NP upgrade, it not only increases in damage, but it also applies a one-turn Sure-Hit buff on Cu, granting him some extent of offensive flexibility.

Despite Cu’s various defensive tools, Protection from Arrow’s Evasion still forms the centerpiece of his kit, as his natural HP pool is still that of a 3-star Servant. Enemies with Sure Hit, Ignore Invincibility, or buff removal are able to rob Cu Chulainn of his greatest strength, leaving him very vulnerable. Secondly, having a defense-focused kit also means that Cu has no way to boost his own damage. This low offensive power sometimes causes situations where he contributes little to the fight, while also preventing backrow Servants from entering the field. This aspect often leaves Cu on the bench as a Master grows stronger and clearing speed becomes the main priority.

While Cu Chulainn’s limitations mean that he is far from a perfect answer to everything, it is his high survivability, and low investment cost that any new Master can appreciate. From a reliable Lancer in the early game, Cu turns into a solo/last stand specialist that can grasp victory from the jaws of defeat, a role in which he truly excels.

Strengths

Weaknesses

Level Up Skill Recommendation

Skill	Priority
Battle Continuation A Apply Guts to self (1 time, 5 turns). Show Info Lvl 1 2 3 4 5 6 7 8 9 10 Revives with HP 1000 1150 1300 1450 1600 1750 1900 2050 2200 2500 CD 9 9 9 9 9 8 8 8 8 7
Protection from Arrows B Apply Evade to self (3 times). Increase own DEF (3 turns). Show Info Lvl 1 2 3 4 5 6 7 8 9 10 Defense + 8% 8.8% 9.6% 10.4% 11.2% 12% 12.8% 13.6% 14.4% 16% CD 7 7 7 7 7 6 6 6 6 5
Disengage C Remove own Debuffs. Recover own HP. Show Info Lvl 1 2 3 4 5 6 7 8 9 10 Heal + 500 600 700 800 900 1000 1100 1200 1300 1500 CD 7 7 7 7 7 6 6 6 6 5

While Cu Chulainn’s kit works perfectly fine even at base skill levels, all of his skills benefit from the cooldown reduction gained via leveling, improving Cu’s capability to cycle through his defensive options.

• Normally a middling skill, leveling Battle Continuation is essential for a last stand/solo-oriented Cu Chulainn, as the reduced cooldown is often crucial in buying time until Protection from Arrows comes off cooldown. Outside of solo situations, Disengage is the better investment of the two skills, but in either case, this skill should be leveled after Protection from Arrows.

• Protection from Arrows B is easily Cu Chulainn’s best skill, as a lot of his survivability is tied to it. As the Evasion only fully expires when he is hit a total of three times, it allows the skill to be used early on in a battle, thus getting a head start on its cooldown. As such, this skill benefits greatly from the cooldown reduction gained at skill levels 6 and 10. The additional Defense buff gained from this skill can also be highly valuable, especially if Cu is equipped with Defense-increasing CEs.

• Although Disengage C is rotationally the least crucial of Cu’s three skills, the debuff removal and decent amount of healing may help him survive in crucial moments. Leveling this skill would allow it to be readily available in most occasions thanks to its low cooldown, and helps Cu top off his HP inbetween Protection from Arrow usages. It should be leveled second if Cu is not to be used for soloing, though Battle Continuation takes precedence for last stand/solo-oriented Cus.

Craft Essence Recommendation

Golden Sumo: Boulder Tournament

Holy Night Supper

Knights of Marines

Volumen Hydrargyrum

Kaleidoscope

The Imaginary Element

Imaginary Around

Gandr

While most of Cu Chulainn’s damage comes from his NP, his mediocre NP gain means that Starting NP Gauge CEs are recommended. CEs granting Quick Performance Up are his preferred damage boosting option, while those with Invincibility can be used in certain specific situations.

• Golden Sumo: Boulder Tournament / Holy Night Supper / Knights of Marines: While Cu’s NP is usually not needed in the first couple of turns, the NP charge provided by these CEs ensures that he will be able to unleash Gáe Bolg without having to focus extensively on using his command cards, while also giving strong performance buffs.

• Volumen Hydrargyrum: Mostly used in solo scenarios, Volumen’s triple-hit Invincibility can be active at the same time with Protection from Arrow’s Evasion, allowing Cu to rotate his cooldowns more reliably in the early fight. The Invincibility charges are consumed before the Evasion ones.

• Kaleidoscope / The Imaginary Element: In the rare occasions where a very early Gáe Bolg is desired, these CEs become Cu’s primary option, especially in the absence of NP charging supports. Starting NP Gauge also helps him come in for clean-up duty and quickly mop up any remaining enemies while staying alive himself.

• Imaginary Around / Gandr: These generic CEs improve on Cu’s Quick cards all around, granting him increased damage, NP gain, and to a lesser extent, star generation. The lack of Starting NP means they benefit him less offensively compared to the above choices, but these can still be used if other options are unavailable.

Gameplay Tips

Cu Chulainn’s survivability is so great that he is capable of tearing up some challenging encounters all by himself.

A typical solo setup involves two level 1 Servants with a taunt: generally a Leonidas and a Georgios. In Cu Chulainn's case, Protection from Arrows should be used first, while letting the two others taunt and die one at a time. After turn 3, Cu Chulainn will be left alone, granting him access to constant Brave chains. Starting from this point, the Master’s ability to rotate Protection from Arrows, Battle Continuation, Disengage, as well as their Mystic Code abilities will determine the strategy’s success.

Due to the strategy’s emphasis on repeated skill usage, having maxed out skill levels to reduce cooldowns is key.

Table of Contents

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• Analysis
• Profile

Other Info

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