Understand Dark Iron Sword
Useful when…
- An Elemental Mastery-focused sword user who can cause one of the reactions named in the passive.
- A combat pattern where the wielder can repeatedly trigger eligible reactions to refresh the 12-second ATK bonus.
Eligible reaction triggers
At R1, causing Overloaded, Superconduct, Stellar-Conduct, Electro-Charged, Quicken, Aggravate, Hyperbloom, Lunar-Charged, or Electro-infused Swirl raises the wielder's ATK by 20% for 12 seconds. The ATK increase rises to 40% at R5. The listed reactions define the trigger set; do not assume that any reaction involving an element activates it.
Who benefits and how alternatives differ
The Elemental Mastery secondary stat and conditional ATK increase can complement a sword wielder who causes the named reactions and also uses ATK-scaling damage. Amenoma Kageuchi instead has an ATK secondary stat and can restore Energy after the wielder uses a Burst, based on Skill casts and stored Succession Seeds. Aquila Favonia has a Physical DMG Bonus secondary stat and an ATK increase, plus a healing and area damage effect triggered by taking damage. These alternatives support different stat profiles and conditions rather than the Dark Iron Sword's reaction trigger.
Ascension and refinement priorities
Ascension has six stages. Listed examples include 5,000 Mora for stage 0 to 1 and 30,000 Mora for stage 5 to 6, with weapon materials. Refinement consumes a duplicate copy and Mora; the examples show 500 Mora for R1 to R2 and 4,000 Mora for R4 to R5. Refinement raises the ATK increase in five-percentage-point steps. It is most relevant when the wielder both triggers the listed reactions and gains value from more ATK during the effect window.
Limits and common mistakes
The effect lasts 12 seconds after causing an eligible reaction. A reaction omitted from the list should not be assumed to trigger it, and the conditional ATK does not replace the weapon's Elemental Mastery secondary stat. Amenoma Kageuchi's Skill-based Seeds and Aquila Favonia's damage-taking trigger are separate mechanics; do not expect either alternative's condition from Dark Iron Sword.
Limitations and tradeoffs
- The ATK increase depends on causing one of the explicitly listed reactions.
- The 12-second duration makes uptime depend on eligible triggers.
- Refinement uses duplicate copies to increase the ATK bonus.
Common mistakes to avoid
- Assuming any Elemental reaction triggers the passive; only the listed reactions are specified.
- Forgetting that the wielder must cause the reaction for the ATK increase.
- Treating the 12-second ATK increase as permanent or as a replacement for Elemental Mastery.