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
Wevetroot 巫杖碎片，Wraith of Wastes 掉落或 community catalog 购买（220 Dracs）。
Sidae's Stake — Agari mode · Access Sidae's Stake; ~30 min respawn rotation
Sidae's Stake — Cogah mode · The Waste Bear fable + Cogah bell access
community catalog vendor · 220 Dracs; qty 1 only
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。
Wevetroot 巫杖碎片，Wraith of Wastes 掉落或 community catalog 购买（220 Dracs）。
The Erstroot Fragment is a Rare weapon fragment used to craft The Erstroot. Best farm: Wraith of Wastes at Sidae's Stake in Agari mode — the encounter respawns on roughly a 30-minute rotation, making it the most reliable repeatable source. Cogah variant (Wraith of Wastes (Cogah)) also drops the fragment but requires Cogah bell access via The Waste Bear fable. Backup: purchase from Avakot merchant for 220 Dracs (qty 1) if you only need a single fragment to complete the craft. Pair with Baskbulb or Joinery drops since Wraith of Wastes shares the Sidae's Stake Agari rotation.
Avakot merchant — 220 Dracs, qty 1
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 |
|---|---|---|---|
| 原根碎片（The Erstroot Fragment）当前 | Rare | Foe: Wraith of Wastes | 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 |
| 骨髓之灾碎片（Marrow's Bane Fragment） | Rare | Foe: Vadagar Bear | 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 |