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
弓系 Attack 槽符文，召唤箭雨造成范围伤害。仅 Gruul Seeker Ruthos（Cogah）掉落。
Sinecure encampment, Midrath — Cogah hard mode · Ring the Cogah bell at Ruthos's encampment to activate hard mode
Other players' worlds — Midrath Sinecure camps · Join other worlds after your Ruthos cooldown resets; Cogah bell per world
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。
弓系 Attack 槽符文，召唤箭雨造成范围伤害。仅 Gruul Seeker Ruthos（Cogah）掉落。
Best farm for The Torrent: Gruul Seeker Ruthos in Cogah mode — the sole community catalog drop source for this bow rune. Travel to his Sinecure encampment in Midrath, ring the Cogah bell to activate hard mode, then defeat him for the enhanced drop table. The Torrent is a Cogah-exclusive drop (no normal-mode variant in community catalogs). Rotate to other players' worlds during cooldowns to keep farming. Pair with the Agari world-boss loop for efficient Cogah sessions.
Foe: Gruul Seeker Ruthos — Cogah) — sole community catalog drop source (Sinecure elite, Midrath encampment
Cogah bell activation — required to unlock hard-mode drop table at Ruthos's encampment
Cross-world rotation — join other players' worlds during boss cooldown for repeated kills
弓: 阿尔卡之息符文
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） · 掠影烟