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。
独特 · Rare
短刃 Utility 槽稀有符文。完全蓄力重击后进入暗影隐身 6 秒，每次潜行击杀延长 3 秒。
Glades arena, Cogah · Craft The Cogah elixir from Agaric Mushrooms to activate hard mode; ring the arena bell
Cogah dungeon · Reach the dungeon Agari encounter in Cogah
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。
短刃 Utility 槽稀有符文。完全蓄力重击后进入暗影隐身 6 秒，每次潜行击杀延长 3 秒。
The Flitsmoke is a Rare short-blade Utility rune dropped by two Cogah Agari bosses. Best route: Etheldred The Weaver — a world Agari in the Glades arena (Cogah) with a ~3-hour respawn. Use The Cogah elixir (crafted from Agaric Mushrooms dropped by Agari) to activate Cogah hard mode, which increases drop rates and enables unique rune drops. Ring the arena bell to begin the encounter. Etheldred also drops The Cogah Creutair and Emberaught, so multiple runes can be farmed per kill. Alternate source: Seachnall The Widower, a dungeon Agari in Cogah. Neither kill guarantees a Flitsmoke drop — expect multiple runs.
Foe: Etheldred The Weaver — Cogah — Glades arena, world Agari, ~3h respawn
Foe: Seachnall The Widower — Cogah — dungeon Agari
Cogah hard mode: crafted The Cogah elixir from Agaric Mushrooms
community catalog: Etheldred The Weaver / Seachnall The Widower drop tables
soulframeguide.com: The Flitsmoke farm guide
飞刃: 旋风符文（Hurlwind） · 噬血符文（Picktrix）
重武: 永焰符文·重型（Everflame (Heavy)） · 倒木符文（Treefell）
剑盾: 焚火符文（Forburn） · 锐映符文
短刃: 余烬符文（Emberaught）