Bailu — Honkai Star Rail Character Guide

Overview

Reactive healing sustain whose Invigoration buff auto-heals allies after each hit, enabling survival against multi-hit barrages. Has a revive and 10% team-wide DMG reduction, but critically lacks cleanse and any offensive utility.

Reactive healing sustain on the Abundance path whose core loop revolves around applying Invigoration via Ultimate, then using Basic ATKs to stay SP-positive while Invigoration automatically heals allies after each hit they take. All healing scales off Bailu's Max HP. Has a one-time revive from her Talent and team-wide 10% DMG Reduction from A6, but critically lacks any cleanse or offensive utility.

Key Mechanics

• Invigoration heals reactively after each hit, meaning it can save allies from multi-hit attacks that would otherwise kill them — if a boss deals 5000 damage across two hits and the ally has 4000 HP, the healing after the first hit allows survival. However, single massive hits exceeding current HP still kill before healing triggers.
• No cleanse of any kind — cannot remove Freeze, Imprison, DoT, or any debuffs. This is Bailu's most critical weakness in late endgame where cleanse is often mandatory.
• Provides zero offensive utility — no ATK buffs, no CRIT buffs, no Energy generation for allies, no Break support. Every limited sustain released since launch offers some form of team damage contribution that Bailu lacks entirely.
• Skill bounce targeting is random — the 2 bounces after the initial heal can target any ally including the original target or allies at full HP, making it unreliable as emergency AoE healing.

Investment Priority

1. LC S1 — Night of Fright's Energy Regen boosts Ultimate uptime and Invigoration consistency. Its stacking ATK buff partially addresses her total lack of offensive utility.
2. E2 — E2's +15% Outgoing Healing after Ultimate meaningfully improves burst healing windows — the most impactful eidolon for pure sustain value.
3. E4 — Adds 10% DMG stacks per Skill heal (up to 30%), giving Bailu some offensive contribution she otherwise completely lacks. Useful if investing further.

Best Relics

Recommended: warrior-goddess-of-sun-and-thunder with giant-tree-of-rapt-brooding

Stat targets: SPD 134 / 143 / 160, HP 5600-6400+, Energy Regen 19.44%+

Main stats: Body: Healing Boost / HP% · Feet: SPD · Sphere: HP% · Rope: Energy Regen

Important Notes

• Lacks cleanse entirely — debuff-heavy enemies (freeze, imprison, DoT) cannot be countered. Devastating in late endgame where cleanse is often mandatory.
• Provides no offensive utility. Every limited sustain released since launch offers Energy support, CRIT buffs, shields, or Break synergy — Bailu offers none of these.
• Cannot prevent true one-shots. Revive triggers after death at low HP — if an ally is instantly killed by a single hit exceeding 100% of their Max HP, the revive triggers but cannot prevent the kill from processing.
• Invigoration reactive healing can fail against massive single-hit attacks — healing triggers after damage is calculated, so a hit that exceeds current HP kills before healing activates.
• Random Skill targeting (1 primary + 2 bounces) is unreliable as AoE emergency healing — bounces may heal full-HP allies repeatedly instead of the ally who needs it.