5-Star
Wind
The Harmony
S+ Tier
Wind
The HarmonyThe premier Skill-amplifying support in Honkai: Star Rail. Cerydra elevates any Skill-based DPS by granting Military Merit and upgrading it to Peerage, which injects massive CRIT DMG, RES PEN, and an extra hit on every Skill use, all while building Charge to trigger the empowered state repeatedly.
Cerydra
Wind / The HarmonyBest Light Cone
Epoch Etched in Golden Blood
Best Relic Set
Sacerdos' 4pc
Planar Set
Lushaka, Sunken Seas
Team Rule
Skill-based DPS
Best Partner
Skills
Basic
King's Castling
Deals Wind DMG equal to 50% of Cerydra's ATK to one designated enemy. A filler action when Skill Points are scarce; rarely a priority in well-managed turns.
50%
of ATK
Skill
Pawn's Promotion
Grants Military Merit to one designated ally and gives Cerydra 1 point of Charge (cap: 8). When Charge hits 6, automatically upgrades that character's Military Merit to Peerage, dispelling their Crowd Control debuffs. A character with Peerage is considered to have Military Merit simultaneously. Peerage increases the ally's CRIT DMG for Skill DMG by 36%, raises their All-Type RES PEN by 8%, and triggers Coup de Main when they use their Skill on an enemy. After Coup de Main ends, 6 Charge is consumed and Peerage reverts to Military Merit.
36%
CRIT DMG (Peerage)
Ultimate
Scholar's Mate
Gains 2 Charge. Deals Wind DMG equal to 144% of Cerydra's ATK to all enemies. If no character on the field currently has Military Merit, prioritizes granting it to the first character in the current team. A reliable way to advance Charge while dealing respectable AoE damage.
144%
AoE Wind DMG
Talent
Ave Imperator
The character with Military Merit increases their ATK by 18% of Cerydra's ATK. When that character uses Basic ATK or Skill, Cerydra gains 1 Charge (disabled during Coup de Main). After the Military Merit character uses an attack, Cerydra additionally deals 1 instance of Wind Additional DMG equal to 30% of her ATK. This effect triggers up to 20 times per Ultimate cycle. Military Merit only takes effect on the most recent target. When the target changes, Cerydra's Charge resets to 0.
30%
Wind add. DMG
Technique
First-Move Advantage
After using Technique, gains Military Merit. When switching the active character, Military Merit transfers to the current active character. At the start of the next battle, automatically uses Skill 1 time on the character with Military Merit without consuming any Skill Points, an excellent opener that front-loads Charge generation and buff application.
Free
skill use on entry
Build Targets
Relic Main Stats
Head
HP (fixed)
Hands
ATK (fixed)
Body
ATK%
Feet
Speed
Planar Sphere
ATK%
Link Rope
ATK%
or Energy Regen
Stat Targets
Substat Priority
01
ATK%
scales buffs
02
Speed
more Skill turns
03
HP%
survivability
04
DEF%
survivability
Skill Upgrade Order
Skill
1st
Talent
2nd
Ult
3rd
Basic
Skip
Skill first because Peerage's CRIT DMG and RES PEN scale with Skill level. Talent second for improved ATK buffing and Additional DMG. Ultimate third for the AoE damage hit. Basic ATK is almost never used intentionally.
Best Light Cones
#1
Epoch Etched in Golden Blood
Her signature and best-in-slot. Provides a high ATK buff to Cerydra and directly increases the Skill DMG output of whichever DPS has Military Merit. Also includes a quality-of-life effect that grants a Skill Point when Cerydra uses her Ultimate.
#2
Flowing Nightglow
Strong free-to-play alternative. Provides Energy Regen and increases Cerydra's ATK after using her Ultimate. When her Ultimate fires, it also grants a team-wide DMG buff, useful in all team compositions.
#3
Dance! Dance! Dance!
Provides turn advance to the entire party whenever Cerydra uses her Ultimate. Excellent in teams that rely on action economy for faster Charge accumulation and DPS rotations.
#4
Planetary Rendezvous
Great situational pick when Cerydra is paired with a Wind DPS like Anaxa or Feixiao. The Wind DMG bonus aligns perfectly with their element, adding a meaningful buff at no extra cost.
Best Relics
Cavern Sets
1
+
Sacerdos' Relived Ordeal (4pc)
Her best-in-slot cavern set. The 4-piece bonus provides CRIT DMG to the DPS character with Military Merit or Peerage. Cerydra can easily trigger and maintain this buff since her Skill and Ultimate both target a single ally, keeping the buff reliably active throughout any fight.
2
+
Prisoner in Deep Confinement (2pc) + Sacerdos' Relived Ordeal (2pc)
A viable mixed alternative if 4-piece Sacerdos pieces have poor substat rolls. The 2pc Sacerdos still contributes CRIT DMG and the 2pc Prisoner adds ATK, covering Cerydra's scaling needs.
3
+
Eagle of Twilight Line (4pc)
A speed-focused alternative that grants Action Advance after Cerydra uses her Ultimate, letting her take her next turn significantly earlier. This accelerates Energy restoration through faster turn cycling and is best paired with Sprightly Vonwacq for the opening combat advance.
Planar Ornament Sets
1
Lushaka, the Sunken Seas
Her best planar ornament for general use. Provides Energy Regen Rate on the Link Rope slot, helping Cerydra cycle her Ultimate more often. Also grants an ATK bonus to the DPS unit positioned first in the team, stacking directly into the Military Merit ATK amplification.
2
Fleet of the Ageless
Solid alternative providing HP and an ATK bonus to all allies when Cerydra's SPD reaches 120 or more. Works well if you have strong Fleet pieces and are not running Lushaka, or as a bridging option while farming.
3
Penacony, Land of the Dreams
Excellent choice specifically when Cerydra is paired with a Wind DPS like Anaxa or Feixiao. The shared Wind element bonus provides meaningful damage uplift for the right team composition.
4
Sprightly Vonwacq
Grants Cerydra an Action Advance at the start of combat when her Energy Regen Rate is 120% or higher. Best used in combination with the Eagle of Twilight Line cavern set for a full action-advance playstyle.
Best Teams for Cerydra
Cerydra is best paired with DPS units that deal Skill DMG and scale with ATK. Teams also need a turn-advance support like Sunday or Bronya to accelerate Charge buildup and trigger Peerage more frequently.
01 · Premium · Phainon
Best-in-slot composition
02 · Anaxa Variant
Wind synergy team
Anaxa's DMG primarily comes from his Skill, benefiting directly from Cerydra's Military Merit and Peerage buffs. Running Planetary Rendezvous on Cerydra provides an additional Wind DMG bonus in this composition.
03 · Feixiao Variant
Hunt + Harmony
04 · F2P · Budget
All accessible characters
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Eidolons
E
1
Seize the Crowns of All
The character with Military Merit ignores 16% of targets' DEF when dealing DMG. If Military Merit has been upgraded to Peerage, the character additionally ignores 20% DEF on Skill DMG. When Cerydra uses her Skill, regenerates 2 Energy for the designated ally. The DEF ignore is particularly strong for Phainon-focused teams and the energy regen helps sustain ally Ultimate cycles.
High Pull Value
E
2
Forge the Dreams of Many
The character with Military Merit deals 40% increased DMG. While a teammate on the field has Military Merit, Cerydra's own DMG increases by 160%. A massive damage multiplier on both the buffed DPS and Cerydra's own Wind attacks and Additional DMG.
Game Changer
E
3
Torch the Laws of Old
Skill Level +2 (max 15) and Basic ATK Level +1 (max 10). The Skill upgrade directly increases the Peerage CRIT DMG bonus and improves the Coup de Main trigger, making this a meaningful gain in buffing potency.
Solid Upgrade
E
4
Remake the Realms of Men
Increases the Ultimate's DMG multiplier by 240%. Transforms Cerydra's Scholar's Mate from a utility hit into a serious damage source, particularly in AoE scenarios where hitting all enemies at an amplified multiplier adds significant total output.
Good Passive
E
5
Help and Hurt Repaid in Full
Ultimate Level +2 (max 15) and Talent Level +2 (max 15). Improves both the Ultimate AoE damage (especially meaningful after E4) and the Talent's ATK buff scaling and Additional DMG frequency. Incremental but consistent across all content.
Incremental
E
6
A Journey Set Starward
The character with Military Merit gains All-Type RES PEN +20%, and the multiplier for the Additional DMG triggered via Military Merit increases by 300%. While a teammate has Military Merit, Cerydra's own All-Type RES PEN increases by 20%. A transformative capstone that dramatically amplifies both Cerydra's own damage and the DPS's penetration. Best reserved for players heavily invested in this character.
Massive Upgrade
Major Traces
Veni
Ascension 2
For every 100 of Cerydra's ATK that exceeds 2000, increases her CRIT DMG by 18%, up to a maximum increase of 360%. This trace is the reason ATK is Cerydra's most critical stat. Higher ATK directly translates into an enormous CRIT DMG ceiling that enhances her own damage and interacts with her E1 energy generation loop.
Vidi
Ascension 4
Increases Cerydra's CRIT Rate by 100% (unconditional). While Cerydra's Charge is below its maximum, the character with Military Merit using their Ultimate grants Cerydra 1 Charge. This effect can trigger once per battle. The 100% CRIT Rate means Cerydra never needs to build CRIT Rate on relics, freeing all secondary slots for ATK and Speed.
Vici
Ascension 6
When using Skill, increases SPD by 20 for Cerydra and the teammate with Military Merit for 3 turns. When the character with Military Merit uses Basic ATK or Skill, regenerates 5 Energy for Cerydra. The energy recovery accelerates her Ultimate cycle, and the shared SPD buff benefits both Cerydra and her carry simultaneously.
+22%
ATK
+22.4%
Wind DMG
+10%
HP
Upgrade Materials
Ethereal Omen
Character Ascension
Firmament Note
Trace Material
Charred Bud of Twilight
Boss Drop
Daythunder Anamnesis
Weekly Boss Drop
Frequently Asked Questions
No. Cerydra performs well with Flowing Nightglow or Dance! Dance! Dance! at lower investment levels. Her signature (Epoch Etched in Golden Blood) provides a high ATK buff and directly increases the DPS's Skill DMG, making it the strongest option, but it is not required to clear endgame content at E0.
Military Merit is granted to one ally via Cerydra's Skill. That ally gains an ATK boost (18% of Cerydra's ATK from Talent) and generates 1 Charge for Cerydra each time they use Basic ATK or Skill. When Charge reaches 6 points, Military Merit automatically upgrades to Peerage, which adds 36% CRIT DMG on Skill DMG, 8% All-Type RES PEN, and triggers Coup de Main on the next Skill use. After Coup de Main, 6 Charge is consumed and it reverts to Military Merit, beginning the cycle again.
The Vidi trace (Ascension 4) unconditionally gives Cerydra 100% CRIT Rate. This means players do not need to build CRIT Rate on any relic piece, freeing all secondary stat slots to pursue ATK%, Speed, HP%, and DEF% instead. The Veni trace (Ascension 2) then converts excess ATK above 2000 into CRIT DMG at 18% per 100 ATK, up to 360%, creating a powerful synergy where stacking ATK% directly grows her CRIT DMG ceiling.
Yes, E1 is particularly recommended for players running Phainon. E1 provides 16% DEF ignore on Military Merit targets and an additional 20% DEF ignore on Skill DMG during Peerage, which translates into a significant direct damage increase for any Skill-heavy DPS. The 2 Energy regeneration for the ally on each Skill use is an additional quality-of-life bonus that keeps their Ultimate cycles flowing.
Absolutely. Cerydra's Military Merit and Peerage buffs apply to any DPS that primarily deals Skill DMG and scales with ATK. Anaxa, Feixiao, and even free units like Dan Heng all benefit from her kit. The key requirement is that your DPS uses their Skill regularly. Characters who deal damage primarily through Follow-Up Attacks, DoTs, or Ultimate hits will not benefit as much from Cerydra's Peerage CRIT DMG bonus.
Aim for 134+ SPD. The Vici trace grants Cerydra and her Military Merit ally an additional 20 SPD when she uses her Skill, so your base value before the buff should be high enough to benefit from speed breakpoints. Higher Speed means more Skill uses per cycle, faster Charge accumulation, and more frequent Peerage triggers, all of which amplify her support value significantly.
