Critical Hit

See also: Critical Rate and Critical Damage

Critical Hits refers to the random occurrence of an attack dealing increased damage to an opponent.

If the attack is a Critical Hit, the CRIT DMG multiplier is applied:

{\text{ Outgoing DMG}}_{\text{Critical}}={\text{Outgoing DMG}}\times (1+\%{\text{ CRIT DMG}})

The base CRIT Rate for most characters is usually 5%, while the base CRIT DMG is 50%. These attributes can be increased by:

Note that Sangonomiya Kokomi's CRIT Rate is decreased by 100% via Flawless Strategy, which means her base CRIT Rate will start negative. A negative CRIT Rate just means that the attack will never CRIT.

Critical Hits can still register on some enemies when they are immune to damage and trigger further effects. For example, The Black Sword and Favonius Series weapons' passives will trigger after landing a Critical Hit on a Hypostasis in its protected state.

Critical Hits appear as larger-font numbers on the screen compared to non-crit hits. Another way to tell if you scored a critical hit is to watch the DMG dealt; a critical hit will have damage multiplied.

CRIT Optimization

Main article: Attribute Optimization

There is a general rule to maximize the product of CRIT DMG and CRIT Rate to maximize the expected DMG.

Let r be the CRIT Rate probability ( $r\leq 1$ ) and d be the CRIT DMG ( $d\geq 0$ ) in decimal form (for example, 150% CRIT DMG would be $d=1.5$ ).

Suppose the DMG is x without CRIT. The expected damage is therefore:

E({\text{DMG}})=(1-r)x+r(1+d)x=x(1+rd)

In general, the goal is to maximize this product by making r and d as large as possible. However, by introducing a constraint on the relation between r and d, it is possible to calculate an optimal ratio between the two. The rule of thumb is to aim for a 2:1 ratio between CRIT DMG and CRIT Rate. See Attribute Optimization for full derivations of these results.

Guaranteed CRIT Hits

General

Having 100% or more CRIT Rate means that attacks will always critically hit.
Attacks on an enemy's weak point guarantees a Critical Hit. Note that Bosses do not have weak points.
- On Elemental Lifeforms, this is usually dead center.
- On Mystical Beasts, this is on the face of Whopperflowers or Geovishaps.
- On Ruin Machines, this is on the exposed cores.
- On most human enemies (Kairagi, Nobushi, Treasure Hoarders, Fatui, etc.), this is directly on the head.
- On Hilichurls, this is directly on the head.

Constellations

2 Constellations match the category selection:

Character	Name	Description	Level
Hu Tao Hu Tao	Butterfly's Embrace Butterfly's Embrace	Triggers when Hu Tao's HP drops below 25%, or when she suffers a lethal strike: Hu Tao will not fall as a result of the DMG sustained. Additionally, for the next 10s, all of her Elemental and Physical RES is increased by 200%, her CRIT Rate is increased by 100%, and her resistance to interruption is greatly increased. This effect triggers automatically when Hu Tao has 1 HP left. Can only occur once every 60s.	6
Xinyan Xinyan	Impromptu Opening Impromptu Opening	Riff Revolution's Physical DMG has its CRIT Rate increased by 100%, and will form a shield at Shield Level 3: Rave when cast.	2

CRIT Hit Effects

These talents, constellations, or weapons apply additional effects when a strike critically hits.

Talents

3 Talents match the category selection:

Character	Name	Description	Type
Yanfei Yanfei	Blazing Eye Blazing Eye	When Yanfei's Charged Attack deals a CRIT Hit to opponents, she will deal an additional instance of AoE Pyro DMG equal to 80% of her ATK. This DMG counts as Charged Attack DMG.	4th Ascension Passive
Klee Klee	Sparkling Burst Sparkling Burst	When Klee's Charged Attack results in a CRIT, all party members gain 2 Elemental Energy.	4th Ascension Passive
Tartaglia Tartaglia	Sword of Torrents Sword of Torrents	When Tartaglia is in Foul Legacy: Raging Tide's Melee stance, on dealing a CRIT hit, Normal and Charged Attacks apply the Riptide status effects to opponents.	4th Ascension Passive

Constellations

4 Constellations match the category selection:

Character	Name	Description	Level
Rosaria Rosaria	Painful Grace Painful Grace	Ravaging Confession's CRIT Hits regenerate 5 Energy for Rosaria. Can only be triggered once each time Ravaging Confession is cast.	4
Rosaria Rosaria	Unholy Revelation Unholy Revelation	When Rosaria deals a CRIT Hit, her ATK SPD increases by 10% and her Normal Attack DMG increases by 10% for 4s.	1
Xinyan Xinyan	Fatal Acceleration Fatal Acceleration	Upon scoring a CRIT Hit, increases ATK SPD of Xinyan's Normal and Charged Attacks by 12% for 5s. Can only occur once every 5s.	1
Yoimiya Yoimiya	A Procession of Bonfires A Procession of Bonfires	When Yoimiya's Pyro DMG scores a CRIT Hit, Yoimiya will gain a 25% Pyro DMG Bonus for 6s. This effect can be triggered even when Yoimiya is not the active character.	2

Weapons

11 weapons match the category selection:

Name	Base ATK (Lv.90)	2nd Stat (Lv.90)	Passive Ability
Favonius Codex	42 (510)	Energy Recharge 10.0% (45.9%)	Windfall CRIT hits have a 60~100% chance to generate a small amount of Elemental Particles, which will regenerate 6 Energy for the character. Can only occur once every 12~6s.
Favonius Greatsword	41 (454)	Energy Recharge 13.3% (61.3%)	Windfall CRIT hits have a 60~100% chance to generate a small amount of Elemental Particles, which will regenerate 6 Energy for the character. Can only occur once every 12~6s.
Favonius Lance	44 (565)	Energy Recharge 6.7% (30.6%)	Windfall CRIT hits have a 60~100% chance to generate a small amount of Elemental Particles, which will regenerate 6 Energy for the character. Can only occur once every 12~6s.
Favonius Sword	41 (454)	Energy Recharge 13.3% (61.3%)	Windfall CRIT hits have a 60~100% chance to generate a small amount of Elemental Particles, which will regenerate 6 Energy for the character. Can only occur once every 12~6s.
Favonius Warbow	41 (454)	Energy Recharge 13.3% (61.3%)	Windfall CRIT hits have a 60~100% chance to generate a small amount of Elemental Particles, which will regenerate 6 Energy for the character. Can only occur once every 12~6s.
Royal Bow	42 (510)	ATK 9% (41.3%)	Focus Upon dealing damage to an opponent, increases CRIT Rate by 8~16%. Max 5 stacks. A CRIT hit removes all existing stacks.
Royal Greatsword	44 (565)	ATK 6% (27.6%)	Focus Upon dealing damage to an opponent, increases CRIT Rate by 8~16%. Max 5 stacks. A CRIT hit removes all existing stacks.
Royal Grimoire	44 (565)	ATK 6% (27.6%)	Focus Upon dealing damage to an opponent, increases CRIT Rate by 8~16%. Max 5 stacks. A CRIT hit removes all existing stacks.
Royal Longsword	42 (510)	ATK 9% (41.3%)	Focus Upon dealing damage to an opponent, increases CRIT Rate by 8~16%. Max 5 stacks. A CRIT hit removes all existing stacks.
Royal Spear	44 (565)	ATK 6% (27.6%)	Focus Upon dealing damage to an opponent, increases CRIT Rate by 8~16%. Max 5 stacks. A CRIT hit removes all existing stacks.
The Black Sword	42 (510)	CRIT Rate 6% (27.6%)	Justice Increases DMG dealt by Normal and Charged Attacks by 20~40%. Additionally, regenerates 60~100% of ATK as HP when Normal and Charged Attacks score a CRIT Hit. This effect can occur once every 5s.