Hyacine Build Guide 2026: Best Relics, Light Cones & HP Synergy Teams
Complete Hyacine build guide for version 4.x. Covers best relic sets, planar ornaments, F2P light cone options, and team compositions including Castorice synergy.
Overview
Hyacine is a 5★ Wind Remembrance sustain who provides massive healing and party support through HP manipulation mechanics. She is the premier sustain for HP-scaling teams, particularly Castorice, and offers strong healing throughput that enables aggressive HP-draining playstyles.
She is considered a top-tier sustain whose value increases with the prevalence of HP-scaling DPS characters.
Role: Sustain (Healer) Rarity: 5★ Element: Wind Path: Remembrance
F2P Verdict: ✅ Good. Hyacine works well at E0 with F2P light cone options. She's a luxury pull if you already have Gallagher or Luocha, but she significantly elevates HP-scaling teams.
How Her Kit Works (Simple Explanation)
- Healing Mechanic: Hyacine heals based on her Max HP. Her skill provides strong single-target healing, and her talent provides team-wide passive healing over time.
- Memosprite: Her memosprite assists with healing and provides additional party-wide HP recovery. It also contributes to team survivability through damage mitigation.
- Ultimate: Restores HP to the entire team and provides a HoT (Heal over Time) effect. Grants additional energy or charge to allies who lose HP.
- Passive: When allies lose HP, Hyacine gains charge to trigger additional healing effects. This makes her an ideal partner for HP-draining DPS like Castorice.
- A2 Trace: Increases Max HP of all allies based on Hyacine's own Max HP.
Key takeaway: Stack HP% on Hyacine — she heals based on it, buffs team HP based on it, and her memosprite scales with it. She enables aggressive HP-draining playstyles.
Best Relic Sets
4-Piece: Longevous Disciple ★★★★★ (Best in Slot)
| Bonus | Effect |
|---|---|
| 2-Piece | HP +12% |
| 4-Piece | When wearer is hit or consumes HP, CRIT Rate +8% for 2 turns (stacks 2 times). |
The 2-piece HP bonus directly scales her healing. The 4-piece CRIT Rate is less relevant but the HP% alone makes this her best option.
Alternative: 2-Piece Longevous + 2-Piece Passerby of Wandering Cloud
- HP% + Outgoing Healing%
- Maximizes raw healing output
- Use if you want pure healing without the CRIT stats
4-Piece: Messenger Traversing Hackerspace
- SPD + team-wide SPD boost on ultimate
- Viable if you want more speed for your team
- Less personal healing but more team utility
Planar Ornaments
| Set | Verdict |
|---|---|
| Bone Collection's Serene Demesne ★★★★★ | Best in slot. +12% HP. +28% CRIT DMG (easy to trigger with 5000+ HP). |
| Broken Keel ✅ F2P | +10% CRIT DMG to whole team. +Effect RES. Less personal healing but good team buff. |
| Fleet of the Ageless | +HP + team ATK buff. Decent all-rounder. |
Main Stats & Substats
Stat Priority
| Piece | Main Stat | Priority |
|---|---|---|
| Body | HP% | ★★★★★ |
| Feet | SPD | ★★★★★ |
| Planar Sphere | HP% | ★★★★★ |
| Link Rope | HP% or Energy Regen% | ★★★★ |
Substats Priority
- HP% (scales all healing and team HP buff)
- SPD (target 134+)
- Flat HP
- Effect RES
Stat Breakpoints
| Stat | Target | Notes |
|---|---|---|
| HP | 7000+ (8000+ ideal) | Scales all her healing and team utility |
| SPD | 134+ | Standard sustain breakpoint |
| Energy Regen | 119.4%+ (with ERR rope) | For faster ultimate rotations |
Best Light Cones
Premium Options
| Light Cone | Rarity | Note |
|---|---|---|
| Time Woven Into Bloom | 5★ | Signature. HP% + team healing + energy synergy. Best in slot. |
| Night of Fright | 5★ | Huohuo's LC. Energy regen + team-wide heal on ult. Solid alternative. |
| Warmth Shortens Cold Nights | 5★ | Bailu's LC. HP% + team heal on ult. Workable. |
F2P Options ✅
| Light Cone | Source | Verdict |
|---|---|---|
| Shared Feeling (S5) 🏆 | Forgotten Hall | Best F2P option. Heals whole team on ultimate. +Energy Regen. |
| Post-Op Conversation (S5) | Gacha (4★) | +Energy Regen + Ultimate healing boost. Excellent for ult uptime. |
| Multiplication (S3+) | Gacha (3★) | Basic ATK advances action forward. Budget option for more actions. |
| Quid Pro Quo (S5) | Gacha (4★) | Energy transfer to lowest-energy ally. Decent team support. |
Tip: Shared Feeling and Post-Op Conversation are both excellent F2P options for Hyacine. Don't feel pressured to pull her signature.
Trace Priority
| Trace | Priority | Why |
|---|---|---|
| Skill | ★★★★★ | Main single-target healing |
| Ultimate | ★★★★★ | Team-wide heal + HoT |
| Talent | ★★★★ | Passive healing + HP synergy |
| Memosprite Skill | ★★★★ | Additional healing from memosprite |
Best Team Compositions
Hyacine's best teams are those where allies frequently lose HP — maximizing her passive healing and charge generation.
Premium S-Tier Team (with Castorice)
| Role | Character | Notes |
|---|---|---|
| DPS | Castorice | HP-draining DPS — perfect synergy |
| Support | Sunday | Action advance for both Castorice and memosprite |
| Support | Cyrene / Tribbie | Additional HP synergy support |
| Sustain | Hyacine | Enables Castorice's aggressive playstyle |
General Sustain Team
| Role | Character | Notes |
|---|---|---|
| DPS | Any HP-scaling DPS (Blade, Castorice, etc.) | — |
| Support | Any buffer | — |
| Flex | Any sub-DPS | — |
| Sustain | Hyacine | Keeps everyone alive through HP drain |
F2P Team ✅
| Role | Character | How to Get |
|---|---|---|
| DPS | Any DPS (Castorice recommended) | Your choice |
| Support | Remembrance Trailblazer / Pela | ✅ Free |
| Support | Tingyun / Asta | ✅ Free |
| Sustain | Hyacine | Limited banner |
Eidolons Worth
| Eidolon | Worth It? | Note |
|---|---|---|
| E0 | ✅✅ Must-have | Already a complete sustain at E0 |
| E1 | ✅ Good | Enhanced team-wide HP buff |
| E2 | ✅ Nice | Additional healing on ally HP loss |
| E6 | ❌ Not for F2P | Extreme healing + team buff — overkill |
Recommendation: E0 is excellent. E1 is nice for HP-scaling teams. Stop there.
Game Mode Performance
| Mode | Rating | Notes |
|---|---|---|
| Memory of Chaos (MoC) | ★★★★★ | S-tier with Castorice. Great sustain overall. |
| Pure Fiction (PF) | ★★★★ | A-tier. Solid sustain + team utility. |
| Apocalyptic Shadow (AS) | ★★★★ | A-tier. Strong sustain but not game-changing. |
F2P Quick Build Summary
Relic Set: 4-pc Longevous Disciple
Planar Set: Bone Collection's Serene Demesne
Light Cone: Shared Feeling (S5, Forgotten Hall)
Main Stats: HP% / SPD / HP% / HP% (or ERR)
Substats: HP% > SPD > Effect RES
Team: Hyacine + Castorice + Support + Flex
Final Verdict
Should you pull Hyacine as a F2P / light spender?
If you have Castorice, yes — she's the best sustain for her. If you don't have Castorice or other HP-scaling DPS, Hyacine is still a great sustain, but less of a priority. Gallagher and Luocha can fill a similar role for cheaper.
Rating: 8.5/10 — pull recommendation: ✅ Yes (especially for Castorice teams)