In the sprawling cosmos of Honkai: Star Rail, a new star has ascended to prominence: Dr. Veritas Ratio. This five-star Imaginary damage dealer on The Hunt path made a grand entrance back in the day, with his initial banner offering him as a complimentary gift to all Trailblazers. That move alone cemented his place in countless rosters, and even years later, in 2026, he remains a formidable and popular choice for tackling the game's toughest challenges. Building him to his full potential, however, requires a dedicated farming journey. This guide breaks down every single material needed to ascend Dr. Ratio to level 70 and maximize his combat capabilities through his traces.
Ascension Materials: The Foundation of Power
Before Dr. Ratio can unleash his scholarly wrath upon enemies, you need to build a solid foundation by ascending his character level. The journey to level 70 is a step-by-step process, each requiring a specific cocktail of materials. Let's be honest, farming these can feel like a real grind, but seeing those numbers go up is worth it.
| Ascension | Required Level | Mob Drops | Stagnant Shadow Drops | Credits |
|---|---|---|---|---|
| 1 | 20 | 5 x Thief's Instinct | - | 4,000 |
| 2 | 30 | 10 x Thief's Instinct | - | 8,000 |
| 3 | 40 | 6 x Usurper's Scheme | 3 x Suppressing Edict | 16,000 |
| 4 | 50 | 9 x Usurper's Scheme | 7 x Suppressing Edict | 40,000 |
| 5 | 60 | 6 x Conqueror's Will | 20 x Suppressing Edict | 80,000 |
| 6 | 70 | 9 x Conqueror's Will | 35 x Suppressing Edict | 160,000 |
| Total | - | 15 x Thief's Instinct, 15 x Usurper's Scheme, 15 x Conqueror's Will | 65 x Suppressing Edict | 308,000 |
Where to Find Ascension Materials:
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Mob Drops (Thief's Instinct / Usurper's Scheme / Conqueror's Will): These common materials are your bread and butter. You can scoop them up from:
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Simulated Universe enemies.
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The Antimatter Legion enemy domain.
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Daily Assignments (one reward per day).
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Boss Drop (Suppressing Edict): This material is obtained exclusively from the Shape of Puppetry: Stagnant Shadow. Here, you'll face the Entranced Ingenium: Illumination Dragonfish. Bring characters that exploit its weaknesses to Physical, Lightning, and Imaginary damage for a smoother fight.
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Credits: The universal currency is most efficiently farmed at the Golden Calyx: Bud of Treasures. Be prepared to battle:
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Automation Hounds (Weak to Physical & Lightning)
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Automation Beetles (Weak to Lightning, Wind, & Imaginary)
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Automation Spiders (Weak to Lightning & Wind)
Trace Materials: Honing the Scholar's Edge
Once Dr. Ratio's base level is set, the real work begins: upgrading his traces. This is where you fine-tune his abilities, turning him from a smart fighter into an absolute genius on the battlefield. We'll break this down into two parts: his Basic Attack and his Skill/Ultimate/Talent.
Basic Attack Trace Materials
Maxing out Dr. Ratio's basic attack requires a specific set of Calyx materials alongside more mob drops.
| Trace Level | Crimson Calyx Materials | Mob Drops | Credits |
|---|---|---|---|
| 2 | 3 x Arrow of the Beast Hunter | 6 x Thief's Instinct | 5,000 |
| 3 | 3 x Arrow of the Demon Slayer | 3 x Usurper's Scheme | 10,000 |
| 4 | 5 x Arrow of the Demon Slayer | 4 x Usurper's Scheme | 20,000 |
| 5 | 3 x Arrow of the Starchaser | 3 x Conqueror's Will | 45,000 |
| 6 | 8 x Arrow of the Starchaser | 4 x Conqueror's Will | 160,000 |
| Total | 3 x Beast Hunter, 8 x Demon Slayer, 11 x Starchaser | 6 x Thief, 7 x Usurper, 7 x Conqueror | 240,000 |
Source: The Arrow series materials (Beast Hunter, Demon Slayer, Starchaser) are farmed at the Crimson Calyx: Bud of The Hunt. The enemies here are Silvermane Soldiers (weak to Wind and Quantum) and Silvermane Gunners (weak to Physical and Ice).
Skill, Ultimate, and Talent Trace Materials
This is the big one—the materials needed to level up Dr. Ratio's core combat abilities to the maximum level of 10. Buckle up, this list is a doozy.
| Trace Level | Crimson Calyx Drops | Mob Drops | Echo of War Drops | Tracks of Destiny | Credits |
|---|---|---|---|---|---|
| 2 | - | 3 x Thief's Instinct | - | - | 2,500 |
| 3 | 3 x Arrow of the Beast Hunter | 6 x Thief's Instinct | - | - | 5,000 |
| 4 | 3 x Arrow of the Demon Slayer | 3 x Usurper's Scheme | - | - | 10,000 |
| 5 | 5 x Arrow of the Demon Slayer | 4 x Usurper's Scheme | - | - | 20,000 |
| 6 | 7 x Arrow of the Demon Slayer | 6 x Usurper's Scheme | - | - | 30,000 |
| 7 | 3 x Arrow of the Starchaser | 3 x Conqueror's Will | - | - | 45,000 |
| 8 | 5 x Arrow of the Starchaser | 4 x Conqueror's Will | 1 x Past Evils of the Borehole Planet Disaster | - | 80,000 |
| 9 | 8 x Arrow of the Starchaser | - | 1 x Past Evils of the Borehole Planet Disaster | 1 | 160,000 |
| 10 | 14 x Arrow of the Starchaser | - | 1 x Past Evils of the Borehole Planet Disaster | 1 | 300,000 |
| Total | 3 BH, 15 DS, 30 SC | 9 Thief, 13 Usurper, 7 Conqueror | 3 x Past Evils | 2 | ~652,500 |
Key Material Sources:
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Past Evils of the Borehole Planet Disaster: This weekly boss material is non-negotiable. You get it from the Echo of War: Borehole Planet's Old Crater on the Herta Space Station. The boss, Starcrusher Swarm King: Skaracabaz, is weak to Physical, Ice, and Imaginary damage but resists Quantum damage and the Entanglement effect. Remember, you only get three attempts at this domain per week, so plan accordingly! It's the ultimate weekly time gate.
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Tracks of Destiny: These precious, limited items are required for the final two trace levels. You can find them as rewards in:
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The Simulated Universe.
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The Nameless Honor battle pass.
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Certain Trailblaze Level milestones.
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Most reliably, as rewards from limited-time Events. Keep an eye on the event schedule!
Final Thoughts and Farming Strategy
Building Dr. Ratio is a significant investment of time and Trailblaze Power. Here’s a quick strategy to tackle it without losing your mind:
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Prioritize Ascension First: Get him to level 70. Farm the Stagnant Shadow and mob drops concurrently.
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Farm Credits Proactively: Don't let credits become a bottleneck. Run the Golden Calyx regularly.
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Grind Crimson Calyx Relentlessly: You'll need a mountain of Arrow materials. This is your main daily grind.
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Never Miss Echo of War: Set a weekly reminder for the Borehole Planet's Old Crater. Those three weekly runs are critical.
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Hoard Tracks of Destiny: Grab them from every possible source—events are your best friend here.
In the end, the journey to max out Dr. Veritas Ratio is a testament to a Trailblazer's dedication. Each material farmed is a step closer to unleashing a scholar whose calculations on the battlefield always lead to victory. The path is long, but the payoff—a perfectly built Dr. Ratio critting for astronomical numbers—is, quite simply, chef's kiss. Now, go forth and farm. Your genius awaits.