This guide provides optimal builds for Herta in Honkai: Star Rail, covering Light Cones, Relics, and stat priorities. Herta, a 5-Star Ice Erudition character, excels in AoE combat but performs well even with fewer targets. Her self-buffs and damage multipliers, including a significant team-wide CRIT DMG boost with another Erudition unit, make her relatively easy to build effectively.

Herta's gameplay centers on Inspiration and Interpretation stacks. Consuming Inspiration enhances her Skill, while Interpretation stacks increase damage from her enhanced Skill and Ultimate.
Optimal Herta Build

Light Cones:
- Into the Unreachable Veil (BIS): Her signature Light Cone, offering significant CRIT Rate, Skill/Ultimate damage boosts, and Skill Point recovery.
- Night on the Milky Way (5 Targets): High potential, but effectiveness diminishes with fewer enemies.
- An Instant Before A Gaze: Provides CRIT DMG and Ultimate damage boosts.
- Before Dawn (Stat Stick): Boosts CRIT DMG, Skill, and Ultimate damage.
- Yet Hope Is Priceless (Stat Stick): Offers a substantial CRIT Rate increase.
- Today is Another Peaceful Day: Excellent 4-star option, often outperforming some 5-star alternatives.
- Geniuses' Repose: Another strong 4-star choice.
- Eternal Calculus, The Day The Cosmos Fell, The Seriousness of Breakfast: Serviceable F2P options.
Relics:
- 4pc Scholar Lost in Erudition (BIS): Provides CRIT Rate, Skill/Ultimate damage boosts, and a bonus after using the Ultimate.
- 4pc Hunter of Glacial Forest: A solid alternative offering Ice DMG and CRIT DMG boosts.
- 2pc combinations: CRIT Rate, Ice DMG, or ATK% are viable placeholders.
Planar Ornaments:
- Izumo Gensei and Takama Divine Realm (Overall BIS): Provides ATK and CRIT Rate boosts, synergizing well with Erudition partners.
- Rutilant Arena: Offers CRIT Rate and Skill damage boosts.
- Sigonia, the Unclaimed Desolation (Pure Fiction BIS): Outperforms others in Pure Fiction but is less versatile.
Relic Stats:
- Body: CRIT Rate
- Feet: ATK% or SPD
- Planar Sphere: Ice DMG or ATK%
- Link Rope: ATK%
Ideal Stats:

- ATK: 2,500-3,900+ (depending on Boots and Sphere choices)
- CRIT Rate: 80%-100% (in combat)
- CRIT DMG: 180%-200%+ (with A4 Trace)
- SPD: Base or 134+ (depending on team composition and Eidolons)
SPD requirements depend heavily on team synergy. Herta's Eidolons further reduce the need for high SPD.
Conclusion
This comprehensive guide allows players to optimize Herta's performance based on their available resources and team composition. Remember to prioritize CRIT Rate and CRIT DMG, and choose Relics and Light Cones that best suit your playstyle and available resources. Even F2P players can achieve excellent results with Herta.