Beyond the Erdtree: Engineering the 90g "Star Shadow" Katana (Convergence Mod Replica)
For the veteran Tarnished, the base game is sometimes not enough. You turn to the "Convergence Mod"—an overhaul that breathes new life, new spells, and new weapons into the Lands Between. Among these community-created legends is the Star Shadow, a katana that embodies the essence of gravity magic and stealth.
Bringing a modded weapon to life presents a unique challenge: there are no official art books or merchandise guides to reference. We had to study the in-game assets directly from the mod files to understand its "DNA."
The result is a 26cm beast that defies expectations. While it shares a length with the Nagakiba, it behaves completely differently in the physical world. Here is the technical analysis of the Star Shadow.
⚒️ Key Specs at a Glance
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Total Length: 26cm (Standard Katana/Odachi scale).
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Net Weight: 90g (Heavyweight Class).
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Density Factor: ~2x heavier than the Nagakiba replica.
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Blade Finish: Black Oxide with "Nebula" Damascus-style texturing.
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Origin: Elden Ring: The Convergence Mod.
The "Dark Matter" Density: 90g vs 47g
Numbers tell the story. Our standard 26cm Nagakiba replica weighs 47g. The Star Shadow, despite being the exact same length (26cm), weighs in at 90g.
Why is it so heavy?
To capture the lore implication of a weapon forged from "falling stars" or gravity ore, we utilized a High-Density Zinc Injection method.
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Thicker Spine: The blade lacks the deep blood groove (Bo-hi) found on standard katanas, resulting in a solid, thick spine that adds significant mass.
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Solid Cast Sheath: The scabbard is not a hollow shell; it is a thick-walled alloy component designed to counterbalance the heavy blade.
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The Hand-Feel: When you hold this, it doesn't feel like a letter opener. It feels like a dense bar of gravity stone.
Surface Engineering: The "Void" Texture
Watch the video above. Pay attention to the blade when the candlelight hits it.
A simple black paint job would look like plastic. The Star Shadow requires a finish that looks like forged void metal. We achieved this through a two-step process:
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Black Oxide Plating: We use electroplating to bond a dark layer to the zinc core. This isn't paint; it's a chemical change to the metal surface, ensuring it won't chip off easily.
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Nebula Texturing: If you look closely at the blade's edge (hamon area), you will see a rippled, wavy pattern. This mimics the chaotic energy of gravity magic or the folded steel of a Damascus blade, but rendered in monochrome darkness.
The Zen of Stealth: A Visual Analysis
The design philosophy of the Star Shadow is "Subtlety."
Unlike the ornate Sword of Night and Flame, this weapon is built for the shadow. The handle wrapping (Tsuka-ito) is matte black, blending seamlessly with the ray skin texture underneath.
The only breaks in this camouflage are the Gold Habaki (blade collar) and the Gold Kashira (end cap). These small accents provide a luxurious contrast, reminiscent of the Moonveil's elegance but stripped of the blue magic, leaving only the raw, kinetic potential of a physical blade.
A Tribute to the Modding Community
At BlacksmithSONG, we don't just follow the official Bandai Namco releases. We play the game. We install the mods. We understand that for many players, The Convergence IS the definitive Elden Ring experience today.
Forging the Star Shadow is our tribute to the modders who keep the community alive. It is a physical manifestation of fan creativity, solidified into 90g of cold metal.
The Blacksmith's Verdict
The Star Shadow is a "Sleeper" hit.
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Buy it if: You love the "Black-on-Black" aesthetic, you are a fan of The Convergence Mod, or you simply want a replica that feels surprisingly heavy and premium in the hand.
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Skip it if: You prefer flashy, colorful weapons (try the Dark Moon Greatsword instead).
It is sleek, heavy, and undeniably cool. A perfect centerpiece for a Zen-style desk setup.
Embrace the gravity. Wield the shadow.
🔗 Expand Your Armory
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Acquire the Star Shadow Replica (Core Product)
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For the official gravity blade: Meteoric Ore Blade (Lore Alternative)
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Browse all Katana models: The Katana Collection (Category Link)
📚 External Resources:
Related blogs about these weapons:
1. Steel from the Void: A Collector's Guide to Elden Ring's Weapons of Cosmic Horror
