Summoners War: Fire Cosmic Worm 100k HP Bruiser Build

To push Fire Cosmic Worm past 100,000 HP in Summoners War World Arena, build him as a scaling frontline bruiser rather than a burst damage dealer. His maximum health pool multiplies across prolonged battles, provided he survives opening burst attacks and avoids crowd control. Pairing high-base-health runes with sustain supports enables him to outlast enemy damage dealers and become an unkillable late-game threat.

Core Rune Sets and Stat Priorities

Extra turns directly accelerate Fire Cosmic Worm's scaling and skill cycling, making Violent his premier four-piece set. If your team lacks burst healing and needs passive recovery against continuous area-of-effect damage, use Vampire as an alternate four-piece set.

For two-piece offset runes, Will is essential to prevent turn-one defense breaks, stuns, or skill resets. Use Nemesis as an alternative offset in high-cleansing teams to interrupt opposing follow-up attacks.

Primary Slot Stats

Slot 2: Speed or HP% (Speed ensures turn cycling with your supports; HP% maximizes absolute health scaling)
Slot 4: HP% (Only run Critical Damage if your substats provide at least 70% Critical Rate)
Slot 6: HP%

Baseline Substat Targets

Combat Speed: +110 to +135 to stay speed-tuned with your cleansing supports
Resistance: 50% to 70% to shrug off incidental crowd control without sacrificing bulk
Effective Bulk: Stack flat and percentage HP substats on every available slot

Artifact Optimization

Because Fire Cosmic Worm scales his damage output directly off his inflating health pool, prioritize damage mitigation and HP-based output over raw attack stats.

Elemental Artifacts: Prioritize Damage Taken from Water and Damage Taken from Light to mitigate common counter-nukers like Miles and Water Geralt.
Archetype Artifacts: Prioritize Added Damage proportionate to MAX HP, Recovery received, and Skill 2/3 Critical Damage.
Mechanic Priority: Added damage based on maximum HP delivers true-damage scaling that bypasses defense and hits its peak value once your health pool enters six figures.

Match Phases and Execution

Match Phase	Priority Actions	Key Hazards
Turns 1–2 (Opening)	Absorb opening hits, maintain immunity, and avoid reckless offensive trades.	Fast Defense Breakers and heavy turn-one burst nukers
Turns 3–5 (Mid-Game)	Stack health scaling, cycle sustain cooldowns, and soften squishy supports.	Heal Block debuffs and passive Oblivion effects
Turn 6+ (Late Game)	Leverage 100,000+ HP to chunk high-priority targets and out-trade remaining units.	Turn-denial loops and match fatigue damage caps

World Arena Drafting Rules

Draft alongside immunity and cleanse engines: Pair Fire Cosmic Worm with supports like Woosa, Velajuel, or Riley. They clear Heal Block, apply immunity, and protect his health-scaling progression.
Never pick early into open counter slots: Units that inflict Oblivion disable his passive health growth entirely, leaving him an inert target.
Ban heavy HP-destroy units: Monsters with built-in HP destruction cap his maximum health pool and prevent him from reaching the 100,000 HP threshold.
Target enemy supports first: Once Fire Cosmic Worm reaches late-game health values, eliminate the enemy's healers and cleansers so opposing damage dealers cannot recover from his ramping strikes.