As a seasoned Trailblazer, I've sifted through countless Relic sets, and even in 2026, the Ashblazing Grand Duke remains the undisputed champion for characters whose power flows through relentless follow-up assaults. It's more than just gear; it's an engine that transforms a single attack into a cascading torrent of destruction. The thrill of watching Lightning Lord descend or Numby charge forward, each strike growing stronger than the last, is what makes building these characters so uniquely satisfying.

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In the ever-evolving meta of Honkai: Star Rail, understanding your Relics is fundamental. Think of them as the fine-tuning for your characters' capabilities. A two-piece set grants a solid, foundational bonus, but the true potential is unlocked with a complete four-piece set, which provides a powerful, often transformative effect. For followers of the Grand Duke, this transformation is all about momentum. You can farm these crucial power-ups from the Caverns of Corrosion, with this specific set primarily found in the Fyxestroll Garden on the Xianzhou Luofu.

So, what makes this set so exceptional for specialists?

  • 2-Piece Effect: A straightforward +20% damage to all follow-up attacks. No conditions, just pure power.

  • 4-Piece Effect: This is where the magic happens. After performing a follow-up attack, the wearer's ATK increases by 6%, stacking up to 8 times. This creates a snowball effect; your follow-ups hit harder, which boosts your ATK, making your next follow-ups hit even harder.

Let me break down why this set is a perfect fit for my favorite follow-up masters.

Jing Yuan: The General's Wrath

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For Jing Yuan, the Ashblazing Grand Duke feels like it was forged for him and his Lightning Lord. His entire playstyle revolves around building stacks for that colossal follow-up strike. This set doesn't just amplify the Lightning Lord's initial impact; it ensures that with each successive summon, the deity's wrath grows. The ATK buff from the 4-piece effect feeds directly back into the Lightning Lord's damage scaling, creating a devastating feedback loop. When building him, I always prioritize:

Stat Priority Reason
ATK% Fuels both his skills and the Lightning Lord's judgment.
CRIT Rate / DMG For those satisfying, screen-clearing critical hits.
SPD More turns means faster Lightning Lord stacks.
Lightning DMG Bonus A perfect sphere for maximizing his elemental output.

Topaz & Numby: A Profitable Partnership

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Topaz's gameplay is a beautiful duet between her and Numby. Her Skill marks a target with Proof of Debt, making it vulnerable, and then Numby relentlessly pursues it. The Grand Duke set supercharges this partnership. Every time Numby charges in (which is very often), Topaz's ATK rises, making Numby's next charge even more profitable. It synergizes perfectly with her Ultimate, which already boosts Numby's damage and Crit DMG. My focus for her substats is clear:

  • ATK%: The source of Numby's financial... I mean, physical damage.

  • CRIT Stats: To capitalize on her Ultimate's buff and make Numby's strikes count.

  • SPD: A faster Topaz applies Proof of Debt more efficiently and generates more turns for Numby to act.

Dr. Ratio: The Logical Conclusion

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The good doctor is a master of single-target dissection, and his follow-up attacks are triggered by applying debuffs. The Grand Duke set turns his methodical approach into an exponential damage curve. Each follow-up from his Skill or the guaranteed one after his Ultimate not only deals massive damage but also stacks his ATK higher. In prolonged boss fights, he becomes an unstoppable force of logic and pain. Building him involves sharpening his every stat:

ATK% and Imaginary DMG form the core of his strength, while CRIT Rate and DMG are essential for ensuring his brilliant conclusions are always critical hits.

Himeko & Herta: The Erudition Aces

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Himeko's gameplay is about building Charge stacks through breaks to unleash her sweeping orbital strike. With the Grand Duke, that powerful follow-up not only clears the field but also powers her up for the next wave. For Herta, her spin-to-win follow-up triggers when enemies are weakened below 50% HP. This set allows her to clean up battles with increasing ferocity, as each spin makes the next one hit a wider, harder-hitting arc.

  • Himeko's Build Focus: ATK%, Fire DMG, and Break Effect to fuel her Charge generation.

  • Herta's Build Focus: ATK%, Ice DMG, and CRIT stats to maximize her multi-target punishment.

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In 2026, with even more characters and sets available, the Ashblazing Grand Duke's design philosophy still stands tall. It rewards aggressive, follow-up-centric playstyles and turns powerful characters into self-sustaining engines of destruction. Farming for the perfect pieces in the Fyxestroll Garden might take time, but the payoff—watching your damage numbers climb turn after turn—is a reward that never gets old. For any Trailblazer looking to master the art of the follow-up, pledging allegiance to the Grand Duke is the most strategic decision you can make.