Stormblade Guide in Blue Protocol Star Resonance

Stormblade Guide in Blue Protocol Star Resonance

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Edmund G. Kolis
2025/10/22

Stormblade is one of the classes available in Blue Protocol: Star Resonance. They fulfill the DPS role while wielding a Reaper Scythe as their weapon of choice. Stormblade has access to two specs - Iaido Slash and Moonstrike.

Today, LDShop outlined a summary of both, showing their strong and weak sides as well as how they play and more.

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Summary of two specs

Iaido Slash Spec

Iaido Slash Spec

  • Iaido Slash is a fast-paced, ping-sensitive specialization that centers around its core cooldown, Volt Surge, which provides most of its damage output.
  • The spec follows a builder–spender playstyle, generating Thunder Sigils and then consuming them with powerful spender abilities.
  • Its defining trait is that, with sufficient Crit Rate during Volt Surge, you can chain spenders back-to-back at full power with virtually no cost, resulting in some of the strongest burst windows in the game.

PROS

CONS

  • Exceptional burst damage
  • Exceptional endgame scaling
  • High maximum damage potential
  • High ping and auto unfriendly
  • Low party utility
  • Requires high Crit to function well

Moonstrike Spec

Moonstrike Spec

  • Moonstrike is a stat-dependent specialization that thrives on high Haste and Luck to achieve peak performance.
  • Its gameplay centres on spending Blade Intent with the core ability Thundercut, while keeping Scythe Wheel—a large, homing spinning blade—continuously active.
  • A defining aspect of the spec lies in its Haste breakpoints, where Thundercut can strike up to four times per cast at certain thresholds.
  • When properly geared and executed, Moonstrike excels in high-end content, boasting ample resources to freely and frequently cast abilities.

PROS

CONS

  • Good burst damage
  • Exceptional endgame scaling (with breakpoints)
  • Edgy Scythes
  • Potential relies on break points
  • Low party utility
  • Scythe Wheel can be buggy in certain flights

 

Iaido Slash Spec Guide

Overview

The Iaido Slash Spec (or Iaido for short) focuses entirely on Thunder Sigils and burst damage, with its core abilities and talents built around managing and spending them efficiently. Specializing in Iaido increases your maximum Thunder Sigil cap, enhances the bonuses gained per Sigil spent, and most importantly, enables continuous chaining of Sigil Spenders during the main cooldown, Volt Surge, for explosive burst potential.

Best Skills

Iaido Slash Spec Best Skills

  • Judgment Cut: Stormblade’s basic attack is primarily used by Iaido during downtime to activate Piercing Slash, one of the class’s core talent effects. You’ll mainly spam it between rotations to trigger this effect—it serves no other major purpose.
  • Iaido Slash: The strongest Sigil spender, responsible for a large portion of our total damage, though limited by a 1-second cooldown. Its cast speed greatly increases when 100 Blade Intent is consumed—something you should always aim to do. The skill can evolve into Thunder Cut.
  • Oblivion Combo: The strongest Sigil spender, this skill contributes a significant portion of your total damage but is limited by a 1-second cooldown. Its cast speed greatly increases when 100 Blade Intent is consumed—something you should always aim to trigger.
  • Overdrive​: A core skill for generating Thunder Sigils. It works in tandem with the Piercing Slash class mechanic to instantly grant 3 Thunder Sigil stacks.
  • Flash Strike: A high-damage ability with a short cooldown that consumes all Thunder Sigils, increasing its damage for each one spent. It synergizes with the Dual Blade Intent and Flash Sharp Strike talents to reduce casting time and instantly restore all Thunder Sigils while Volt Surge is active.

Imagines

Imagines provide powerful passive effects, as well as active buffs and skills that make content easier.

Muku Chief

Muku Chief

Has up to 2 charges. When activated, grants increased Crit Rate and Crit Damage for its duration, and provides a passive Crit Damage bonus of up to 25%. This Imagine is useful even before being levelled up.

Phantom Arachnocrab

Phantom Arachnocrab

Boosts your Mastery stat upon activation and offers a passive Mastery increase. Once upgraded to Level 3, it outperforms the Brigand Scout Leader even at that Imagine’s maximum level.

Brigand Scout Leader

Brigand Scout Leader

Passively enhances your Agility, with a temporary Agility boost when used.

Boarrier Tyrant

Boarrier Tyrant

Its active and passive bonuses both improve Special Attack Skill damage. You receive this Imagine for free from the Battle Imagine Box, making it a strong early option until you can craft higher-tier Imagines from the recommended list.

Talents

Iaido Slash Spec talent

  • Start by unlocking Iaido Mastery and Violent Slash to increase ​Iaido Slash​'s Crit and chance to trigger multiple talent effects.
  • Instant Slash, Wind Assault II, and Thunder Curse further increase both damage and Crit.
  • Zen Moment and Flash Frenzy Blade enable ​Iaido Slash​ to activate additional talent effects when landing a critical hit.
  • Wind Assault I and Flash Sharp Strike provide extra Crit Rate bonuses.
  • Thunder Sigil Charm, Dual Blade Intent, and both Thunder Sigil Rewinds can increase damage and allow you to perform the Spec's rotation.
  • Infinite Thunder helps reduce downtime between Burst rotations.
  • Finally, Arcane, Thunder Reversal, and Rapid Thunder Assault increase damage to round out build.

Rotation and how to play

Burst Rotation

  • Our goal with our burst rotation is to execute as many 6 Sigil finishers as possible.

Iaido Slash Spec Burst Rotation

Burst Rotation

  • Open fights with this combo and execute it as frequently as you can throughout battle.
  • Start your burst rotation by using any available Imagines, then activate Volt Surge
  • After this, at any point you don’t have maximum Sigils, use Overdrive to recover them.
  • After using Volt Surge establish initial Sigils with an Overdrive, then alternate between using Iaido Slash and Flash Strike.

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Moonstrike Spec Guide

Overview

Despite its name, the Moonstrike Spec primarily centres around the Thundercut and Scythe Wheel abilities, which deliver most of its damage and activate key talent effects.

When properly built and played, Moonstrike excels in high-end content, offering plentiful resources to cast abilities frequently and aggressively.

Best Skills

Moonstrike Spec Best Skills

  • Judgement Cut: Only useful for Moonstrike during downtime, as it triggers one of the class’s core talent effects, Piercing Slash. You’ll mainly spam it between rotations for this effect—nothing beyond that. With the “Divine Sickle” talent unlocked, it can temporarily transform into Divine Sickle.
  • Moonstrike: The Special Skill that replaces Iaido Slash. It requires 3 Sigils to activate and, while not central to the burst rotation, plays an important role in the downtime rotation. It also triggers multiple talent synergies and generates Blade Intent in preparation for the next burst window. With the “Chaos Breaker” talent unlocked, it can temporarily transform into Chaos Breaker.
  • Scythe Wheel: Summons a Moonstrike that inflicts continuous close-range damage for 35 seconds. With the Phantom Scythe Realm I talent unlocked, it can summon two Moonstrikes instead. This skill is primarily used to trigger passive Lucky Hit effects from talents.
  • Thundercut​: Main skill to deal damage and to trigger several talent effects.
  • Stormflash​: Generates 20 Blade Intent per second for up to 15 seconds. While active, it will trigger Lightning Flash and Thunder Might talent effects.

Imagines

Phantom Arachnocrab

Phantom Arachnocrab

Increases Mastery when cast and also provides a passive Mastery boost.

Celestial Flier

Celestial Flier

Raises Haste on activation and passively enhances Haste as well, helping you reach key Haste thresholds for the Thundercut skill more easily.

Muku Scout

Muku Scout

Obtain up to 5% ATK​ after dealing damage 10 times within 3 seconds, stacking up to 3 times. When the Imagine is used, you instantly gain 6 temporary stacks.

Shadow Captain

Shadow Captain

Both its active and passive effects enhance Expertise Skill damage. You receive this Imagine for free from the Battle Imagine Box, making it a strong early option until you can craft higher-priority Imagines from the list.

Talents

Moonstrike Spec talent

  • Start with Thunder Seed and Touch of Thunder Soul to unlock the class mechanic and double Blade Intent capacity.
  • Chaos Breaker, Thunder Scythe, and Moonstrike Delay boost damage and improve Blade Intent regen.
  • Thousand Thunder Flashes, Thunder Might, and Moonlight Charge reduce Stormflash’s cooldown and increase Storm Scythe attacks.
  • Thunder Curse enhances overall damage.
  • Blade Intent – Rare, Phantom Scythe Realm I, and Divine Sickle raise damage, Blade Intent cap, and Moonstrike count.
  • Thunder Sigil Charm and Raijin Dash Charge extend Stormflash and add Charge Seed generation.
  • Breath of Mark lets Moonstrikes generate Thunder Sigils on Lucky Hits.
  • Phantom Scythe Realm II restores 25 Blade Intent on Thundercut based on Luck.
  • Lightning Flash doubles Moonstrike speed during Stormflash.
  • Finish with Shadow Despise and Thunder Strike Whisper for extra damage.

Rotation and how to play

Burst Rotation

  • Our goal with our burst rotation is to execute as many Thundercut and Divine Sickles as possible during Stormflash’s duration while also ensuring Scythe Wheel is active before starting.

Burst Rotation

Burst Rotation

  • Before starting, ensure you’ve used Scythe Wheel recently enough that it won't time out during the duration of Stormflash
  • Next, use your Imagines, then activate Stormflash and begin spamming Thundercut until Divine Sickle is available or you run out of Blade Intent.
  • Upon reaching zero Blade Intent, use Chaos Breaker and continue the same rotation until Stormflash and your Imagine’s cooldowns have finished.

 

Conclusion

Stormblade features one of the highest skill ceilings in Blue Protocol, offering two distinct yet demanding playstyles. It’s perfect for players who enjoy fast-paced, technical combat, flashy animations, and high damage potential. With commitment and optimized gear, Stormblade can become one of the most powerful and rewarding classes to master.

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Edmund G. Kolis

Edmund G. Kolis Experienced Game Editor

I'm a game guide writer with over 20 years of experience playing all types of games, especially anime-style RPGs, gacha and sports games. I love finding smart ways to beat tough levels without spending too much money. By studying game mechanics and character systems, I create easy tips to help players save time and resources. When I'm not gaming, I watch anime to get inspiration for strategies. My goal? To help you enjoy games more and stress less – even when facing "impossible" bosses! Let’s make gaming fun and affordable together!