Alhaitham
Admonishing Instruction
GrassSwordSumeru AkademiyaThe current scribe of the Sumeru Akademiya, a man endowed with extraordinary intelligence and talent. He lives free — free from the searching eyes of ordinary people, anyway.
Base HP
13348
Base ATK
313
Base DEF
782
Dendro DMG Bonus
28.8%
Lv.1 → Lv.90 Ascension Materials
Grass
Abductive Reasoning
Performs up to 5 rapid strikes.
Charged Attack
Consumes a certain amount of Stamina to unleash 2 rapid sword strikes.
Plunging Attack
Plunges from mid-air to strike the ground below, damaging opponents along the path and dealing AoE DMG upon impact.

Universality: An Elaboration on Form
Holding this skill will cause it to behave differently.
Hold
Enters Aiming Mode to adjust the direction of Alhaitham's rush attack.
Chisel-Light Mirror
When this skill is unleashed, Alhaitham will generate 1 Chisel-Light Mirror. If there are no Mirrors at this time, he will generate 1 additional Mirror. Chisel-Light Mirrors will have the following properties:
·When he possesses Chisel-Light Mirrors, Alhaitham's Normal, Charged, and Plunging Attacks will be converted to Dendro DMG. This cannot be overridden.
·When attacks of the aforementioned kind hit opponents, the Chisel-Light Mirrors will unleash a Projection Attack that deals AoE Dendro DMG based on the number of Mirrors on the field.
·A total of 3 Chisel-Light Mirrors can exist at once.
·The Chisel-Light Mirrors will disappear one after the other over time, and will all disappear when Alhaitham leaves the field.
"Truth inherently exists amidst uncertainty. Even the greatest of scholars are not immune to error."

Particular Field: Fetters of Phenomena
If Chisel-Light Mirrors exist when this ability is unleashed, all such Mirrors will be consumed and increase the number of DMG instances dealt.
2s after this ability is unleashed, if 0/1/2/3 Mirrors were consumed, Alhaitham will generate 3/2/1/0 new Mirrors in turn.
"If a researcher makes wisdom their goal, then they should be prepared to make an enemy of every word they read. Only then can they avoid bias."
Passive Talents

Four-Causal Correction

Mysteries Laid Bare
The DMG of both aforementioned abilities can be increased by a maximum of 100% this way.

Law of Reductive Overdetermination
Vultur Volans
1Intuition
2Debate
3Negation
Maximum upgrade level is 15.
4Elucidation
·Each Mirror consumed will increase the Elemental Mastery of all other nearby party members by 30 for 15s.
·Each Mirror generated will grant Alhaitham a 10% Dendro DMG Bonus for 15s.
The pre-existing duration of the aforementioned effects will be cleared if you use Particular Field: Fetters of Phenomena again while they are in effect.
5Sagacity
Maximum upgrade level is 15.
6Structuration
· 2 seconds after Particular Field: Fetters of Phenomena is unleashed, he will generate 3 Chisel-Light Mirrors regardless of the number of mirrors consumed.
· If Alhaitham generates Chisel-Light Mirrors when their numbers have already maxed out, his CRIT Rate and CRIT DMG will increase by 10% and 70% respectively for 6s. If this effect is triggered again during its initial duration, the duration remaining will be increased by 6s.
Character Ascension
Talent Upgrade (All 3 Talents)
Total Materials Required
Spiral Abyss Statistics
Usage Rate (Constellation)
Usage Rate (Characters, Weapons, Artifacts)
Builds
Builds
Alhaitham (Main DPS) | Build
Character Guide • Build: Alhaitham | Update Date: 10/06/2025 | Editor: .m1zuneko
• Best Weapon(s):
Light of Foliar Incision -
His signature weapon, but loses to Uraku Misugiri. Regardless, its an amazing stat stick along with full utilization of it's passive, provides CRIT Rate, Crit DMG and damage increase depending on his EM.
Primordial Jade Cutter
A great stat stick, the attack is an added benefit
• Replacement Weapon(s):
Competitive 3* weapon, may force the player out of Hyperbloom teams because of the Bloom DMG ruining the passive.
Festering Desire -
A decent passive that benefits his kit, but is from a very old Event.
Wolf-Fang -
A very strong Battle Pass option.
• Best Artifact Set:
• Third Best Artifact Set:
• Main Stats Priority
<goblet> Dendro DMG bonus
<circlet> CRIT DMG or CRIT Rate
• Substats Priority
Elemental Mastery
CRIT Rate
CRIT DMG
• Talent Priority
2) Normal Attack: Abductive Reasoning
3) Elemental Burst: Fetters of Phenomena
• Notes:
Consider Marechaussee Hunter if played with Furina.
Synergies
Namecard

Alhaitham: Enlightenment
Namecard style. "The only things researchers should abide by are debates and dialectics. Only by questioning everything at all times can one avoid falling into prejudice."
Special Dish
Ideal Circumstance
Outfits
The Rational
DefaultAlhaitham's outfit. "Don't bother the Scribe with trivialities... What do you think those soundproofers of his are for, anyway?"\nSo observed an experienced staff member at the Temple of Silence.
A capable person who keeps a low profile for too long is often perceived as someone with a mysterious identity and ulterior purposes. Alhaitham himself is a powerful rebuttal to all these cliché views: He is a brilliant man, but he is only an ordinary employee of the Akademiya, with a stable job and a cushy house in Sumeru, leading a carefree and comfortable life. Sometimes, people find it next to impossible to catch the current scribe in his office. Little do they know about the scribe, other than his name, "Alhaitham," and that he is supposed to be present during work hours. The fact is, no one knows his whereabouts, and all they can do is leave documents and files on his desk. Alhaitham couldn't be more satisfied with how things are. The man might be at home or in the library, but he'll never appear where people wish him to be. Having an entirely unpredictable schedule affords undisturbed freedom.
I'm Alhaitham, the Akademiya's scribe. If you wish to access an archived file, please submit an application according to the prescribed format. Oh, your form isn't ready? Not to worry. You can come again on the next working day. My work hours are posted outside the office.
