已对照游戏内数据、官方开发直播与补丁说明核验，
已针对 Preludes 15 人工核实。
武器碎片 · Rare
Bromius 的凶残武器碎片，Vadagar Bear 掉落或 community catalog 购买（250 Dracs）。掉落待核实。
Corrupted pool habitat — nighttime Vadagar Bear spawns · Hunt at night for consistent Vadagar Bear encounters
Avakot merchant — 250 Dracs (qty 1) · Check merchant stock; purchase when available as backup
以下路线来自社区整理与攻略汇总，掉落率请在游戏内核对。
Bromius 的凶残武器碎片，Vadagar Bear 掉落或 community catalog 购买（250 Dracs）。掉落待核实。
以下刷取建议来自社区整理，尚未在游戏内逐条核实。
Best farm for Marrow's Bane Fragment: hunt Vadagar Bear at night — the community catalog confirms Vadagar Bear as the primary drop source, with nighttime spawns providing the most consistent encounter rate. Engage Vadagar Bear in its corrupted pool habitat for repeated fragment drops. The Avakot merchant (250 Dracs, qty 1) serves as an emergency backup purchase when stocked, useful if RNG is unfavorable or for players who prefer to skip the grind. Take the fragment to Tuvalkane's forge to craft Marrow's Bane. Pair with other weapon-fragment farm loops that share nighttime enemy rotations for efficient multitasking.
Foe: Vadagar Bear — primary community catalog-confirmed drop source — nighttime spawns
Avakot merchant — 250 Dracs, qty 1) — emergency backup purchase when stocke
同类别材料横向对比，便于判断稀有度与主要掉落来源。
| 物品 | 稀有度 | 主要来源 | 刷取路线 |
|---|---|---|---|
| 骨髓之灾碎片（Marrow's Bane Fragment）当前 | Rare | Foe: Vadagar Bear | 有 |
| 仰光者摔角碎片 | Rare | Foe: Kabocha | 有 |
| 衣冠冢碎片 | Rare | Foe: Rovgot Wyrm — Fallen Skycastle / R… | 有 |
| 露珠利昂碎片 | Rare | Container: Collector Crate | 有 |
| 纳瓦哈碎片 | Rare | Fable: The Wreck of Mestra Carmo — firs… | 有 |
| 奥林-暗影碎片（Oryn-Umbr Fragment） | Rare | Container: Ode Buried Chest | 有 |
| 战车碎片（Rook Fragment） | Rare | Container: Collector Crate | 有 |
| 原根碎片（The Erstroot Fragment） | Rare | Foe: Wraith of Wastes | 有 |