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Extinguished Core
Honkai: Star Rail · UPGRADE MATERIAL

Extinguished Core

Used in supported upgrade goals for 45 records. Open a record to choose a target and calculate the exact requirement.

About Extinguished Core

Material

Where to obtain it

  • Certain Fragmentum Monsters
  • Dropped by enemies in Divergent Universe
  • Simulated Universe enemies
  • Assignment rewards
  • Embers Exchange
  • Omni-Synthesizer — Material Exchange
  • Calyx (Golden)

Used by the supported upgrade goals listed below. Requirements depend on the selected current and target levels.

WHERE IT FITS

Characters and equipment that use this material

ArcherQuantum★★★★★

Archer

Released Jul 11, 2025Five-star Quantum Hunt damage dealer whose Skill supports repeated single-target attacks during Circuit Connection. Consider Archer when you can fund repeated Skill uses and teammates attack often enough to trigger his Charge-based follow-ups.Guide

Archer’s Skill enters Circuit Connection and deals Quantum damage to one enemy. Further Skill uses during the state do not end his current turn and increase Skill damage, while teammate attacks can spend his Charge to launch follow-ups that restore Skill Points. His extended Skill sequence therefore depends on available Skill Points, and his follow-ups depend on both Charge and teammate attacks.

BailuThunder★★★★★

Bailu

Released Apr 26, 2023Abundance healer with bouncing recovery, Invigoration, and one-time lethal protectionGuide

Bailu heals one ally and then bounces healing to random allies, while her Ultimate heals the whole party and grants Invigoration. Invigorated allies heal when hit, and her Talent can prevent one killing blow per battle. Use her when repeated healing and a one-time safety net are valuable, while remembering the lethal protection can only trigger once.

Black SwanWind★★★★★

Black Swan

Released Feb 6, 2024Wind Nihility damage dealer who builds Arcana through damage-over-time applicationsGuide

Black Swan applies Arcana, a stacking Wind damage-over-time effect, and increases its pressure through enemy turns, allied DoT applications, and her Ultimate’s Epiphany state. Consider her when the team can apply DoT repeatedly and fights allow enemies to take turns, since Arcana’s main damage and additional effects resolve at the start of enemy turns.

Elation Brimming With BlessingsElation★★★★★

Elation Brimming With Blessings

Introduced in v4.1Elation Light Cone for a wearer who can use Skill or Ultimate on one ally; consider it when that target can make use of a temporary Elation increase.Guide

Elation Brimming With Blessings combines an ATK increase for its wearer with a short Elation buff applied to a single ally target when the wearer uses Skill or Ultimate on that ally. It is most relevant when the wearer’s actions can target an ally and the target benefits from Elation during the following turns.

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