The Definitive Breakdown: How Saber Alter Annihilated Berserker In Heaven's Feel

The confrontation between Saber Alter and Berserker (Heracles) is one of the most brutal and visually spectacular battles in the entire Fate franchise, forever changing the power dynamic established in earlier routes. As of today, December 15, 2025, the definitive cinematic depiction from Fate/stay night: Heaven's Feel II. Lost Butterfly continues to be the primary source for dissecting this epic clash, revealing that a Servant’s power is only as limitless as their Master’s mana supply. This article dives deep into the lore, the mechanics of their Noble Phantasms, and the unique conditions that led to the Berserker’s annihilation by the corrupted King of Knights.

The core of this legendary match-up lies in a simple question of resources: can Heracles's legendary durability outlast Artoria Alter's near-infinite destructive force? The answer, as shown in the Heaven's Feel route, is a resounding no, primarily due to the overwhelming mana provided by the Shadow and its Master, Sakura Matou.

The Combatants: Saber Alter and Berserker Biography & Stats

Before analyzing the fight, understanding the altered state of both Servants is crucial. The fight pits a corrupted King against a maddened Demigod, both operating at peak, yet twisted, efficiency.

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Artoria Pendragon (Saber Alter) - The King of Knights Corrupted

• True Name: Artoria Pendragon
• Class: Saber (Corrupted)
• Source: The Legend of King Arthur
• Region: Britain/Europe
• Gender: Female
• Height: 154 cm
• Weight: 42 kg
• Alignment: Lawful Evil
• Master: Sakura Matou (via the Shadow)
• Key Characteristics: Corrupted by the mud of the Holy Grail (Angra Mainyu), her personality is cold, ruthless, and efficient. Her armor is black, and her power is amplified by an inexhaustible mana source.

Heracles (Berserker) - The Raging Demigod

• True Name: Heracles (Hercules)
• Class: Berserker
• Source: Greek Mythology
• Region: Greece
• Gender: Male
• Height: 253 cm
• Weight: 311 kg
• Alignment: Chaotic Mad
• Master: Illyasviel von Einzbern
• Key Characteristics: Summoned under the Mad Enhancement skill, stripping him of his reason but amplifying his already immense physical strength to an absurd degree. He is one of the strongest Servants in the entire Holy Grail War.

The Core Conflict: Excalibur Morgan vs. God Hand

The battle between Saber Alter and Berserker is a fundamental clash of offense versus defense, specifically involving their two most potent abilities: Excalibur Morgan and God Hand. The sheer power of these Noble Phantasms determines the outcome.

The Power of Excalibur Morgan (The Black Sword)

Saber Alter wields the corrupted version of the legendary holy sword, Excalibur Morgan: Sword of Promised Victory. This is a dark, amplified version of the original, classified as an Anti-Fortress Noble Phantasm.

• Rank: A++
• Nature: Pure torrent of destructive magical energy.
• The Alter Advantage: Due to her connection to the Shadow and Dark Sakura, Saber Alter has a functionally infinite supply of magical energy. This allows her to use her Noble Phantasm not just once, but repeatedly, with no concern for mana depletion. This is the single biggest factor in her victory.

The Resilience of God Hand (The Twelve Labors)

Berserker’s primary defense is his Noble Phantasm, God Hand: Twelve Labors. This ability is what makes him a terrifying opponent for any Servant.

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• Rank: B
• The 12 Lives: God Hand grants Heracles 12 automatic resurrections, meaning he must be killed 12 separate times to be truly defeated.
• Attack Immunity: Any attack that successfully kills him once is rendered ineffective for all subsequent lives. The attack must be of Rank A or higher to register as a "life" taken.

For a standard Servant, killing Berserker even once is a monumental task, let alone 12 times with 12 different attacks. However, Saber Alter is far from a standard Servant.

The Cinematic Annihilation: Breaking Down the Fight in Lost Butterfly

The actual confrontation, as depicted by ufotable, is a masterclass in power scaling and visual effects, showcasing Saber Alter’s terrifying efficiency. The battle is a short, brutal display of overwhelming force.

Phase 1: Overwhelming Physicality with Mana Burst

Saber Alter does not rely on a single Noble Phantasm blast from the start. She first engages Heracles in close-quarters combat, utilizing her A-Rank Mana Burst skill. This skill infuses her body and weapon with magical energy, giving her explosive speed and power that surpasses Berserker’s raw strength, allowing her to parry and counter his massive blows. She is able to cut him down once with her blade, taking his first life.

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Phase 2: The Shadow’s Intervention

Crucially, the fight is not a one-on-one duel. The Black Shadow, which is connected to Saber Alter's Master, Sakura Matou, actively participates. After Saber Alter takes the first life, the Shadow binds Berserker, severely restricting his movements. Although Heracles—the greatest hero in Greek Mythology—manages to tear some of the Shadow off, he is significantly slowed and weakened, creating the perfect window for the final strike.

Phase 3: The Decisive Excalibur Morgan Barrage

With Berserker restrained, Saber Alter unleashes her ultimate attack: a continuous, devastating barrage of Excalibur Morgan. The lore and fan debates suggest that a single, full-powered blast of Excalibur Morgan is so potent—far exceeding the power of the original Caliburn—that it can kill Heracles multiple times in one shot, bypassing the single-life-per-attack rule of God Hand due to its sheer destructive scale.

• The Power Scaling Debate: While the exact number is debated among fans, the cinematic depiction and lore discussions imply that the final, continuous blast of Excalibur Morgan took out a massive chunk of God Hand's remaining lives. Some analyses suggest the final attack took 6 to 9 lives, effectively wiping out the majority of his remaining stock in a single, prolonged attack.

The combined assault of the Shadow’s binding and the overwhelming destructive power of the repeated Excalibur Morgan blasts is what ultimately defeats the mighty Berserker, leaving him with only a handful of lives left before he is finally consumed by the Shadow. This victory establishes Saber Alter as a terrifying force, capable of defeating Servants who were previously considered unbeatable.