Preludes 15Verified 23 Jul 2026
Last verified against in-game data, official DevStreams, and patch notes.
Verified for Preludes 15.
Inorganic · Uncommon
Corrupt Onyx
How to Get Corrupt Onyx
Best steady route for Corrupt Onyx: complete Fort Curlail or Mirifuir sieges and burn the Skylantern afterward — both list Corrupt Onyx in their catalog reward pools with a 3h cooldown per siege. Verify actual yields in-client, as the item page has no dedicated drop table for this material. Between siege cooldowns, loot Ode Strongboxes and Ode Chests on Midrath camp patrols — these containers supplement Onyx alongside Ichor and Graphite on the same loop. Clearing Sinecure and Ode foes in eastern Midrath camps adds minor foe-drop chances. The Cogah Agari rotation (Kabocha, Wraith of Wastes, Mendicant King) provides supplemental Onyx drops when combined with other Agari material farming like Moranite and Sappheline.
Fort Curlail / Mirifuir · Complete siege & burn Skylantern (~3h cooldown)
Ode / Sinecure camps · Loot Ode Strongboxes & Ode Chests each loop
Eastern Midrath camps · Kill Baliq, Bisulcam & Sinecure Knights
Midrath world bosses · The Cogah Elixir + Agari timers
Routes below are community-sourced — verify drop rates in-game.
Black Ode mineral for weapon upgrades and Cenotaph crafts. Best steady route: Fort Curlail or Mirifuir siege rewards (every 3h). Day-to-day supplement: Ode Strongboxes and Ode Chests on Midrath camp patrols — often paired with Ichor farming.
Corrupt Onyx · All Farm Sources
Farm reference
Cenotaph craft needs ×15 Onyx — plan siege runs and camp patrols together.
Rotate with Mirifuir sieges (~3h each). Also drops Crypt Keys.
Burn the Skylantern after clearing Conductors — see siege guides.
Primary farm: Fort Curlail / Mirifuir sieges— burn the Skylantern (~3h cooldown; reward pool includes onyx). Everyday supplement: Ode Strongbox camp patrols, often with Ichor and Crypt Keys. Cenotaph needs ×15 — see Cenotaph. No merchant buy — verify drops in-game.
Route A · Best farm
Best steady route for Corrupt Onyx: complete Fort Curlail or Mirifuir sieges and burn the Skylantern afterward — both list Corrupt Onyx in their catalog reward pools with a 3h cooldown per siege. Verify actual yields in-client, as the item page has no dedicated drop table for this material. Between siege cooldowns, loot Ode Strongboxes and Ode Chests on Midrath camp patrols — these containers supplement Onyx alongside Ichor and Graphite on the same loop. Clearing Sinecure and Ode foes in eastern Midrath camps adds minor foe-drop chances. The Cogah Agari rotation (Kabocha, Wraith of Wastes, Mendicant King) provides supplemental Onyx drops when combined with other Agari material farming like Moranite and Sappheline.
Route B · Source
Fort Curlail / Mirifuir siege — Skylantern rewards
Route C · Source
Ode Strongbox + Ode Chest — camp patrol loop
Route D · Source
Sinecure / Ode foe patrols — Baliq, Bisulcam, Knights
Route E · Source
Cogah Agari — supplemental boss pool
All sources
| Source | Notes |
|---|---|
| Siege: Fort Curlail Siege · Siege of Mirifuir — Skylantern reward pools | community-verified |
| Container: Ode Strongbox — Ode & Sinecure camps | primary patrol farm |
| Container: Ode Chest — camp & dungeon routes | — |
| Other Ode & Sinecure foes — see drop table on item page | — |
Used In
- Cenotaph
- ode weapon upgrades
- high-tier weapon crafts
Inorganic comparison
Side-by-side view of items in the same category — compare rarity and primary sources.
| Item | Rarity | Primary source | Farm guide |
|---|---|---|---|
| Corrupt OnyxThis page | Uncommon | Siege: Fort Curlail Siege · Siege of Mi… | Yes |
| Petrified Ichor | Rare | Foe: Gruulseeker Selvins — night shrimp… | Yes |
| Ode'n Synsylk | Uncommon | Container: Barrel | Yes |
| Quicksilver | Uncommon | Container: Basic Chest | Yes |
| Silistyt | Uncommon | Foe: Gruulseeker Selvins — night shrimp… | Yes |
| Ichor | Common | Container: Ode Strongbox — Ode & Sinecu… | Yes |
| Ode Graphite | Common | Container: Barrel — Ode & Sinecure camps | Yes |
| Pincer Shard | Common | — | Yes |