5th Singularity E Pluribus Unum: Des Moines (Surveillance Fortress) free quest is the best AP & time-saving location to farm Claw of Chaos. You'll get about 2x Claw of Chaos by spending 180AP.
7th Singularity Babylonia: Ur (Jaguar Park) free quest is one of the other locations to farm Claw of Chaos. You can also get Seed of Yggdrasil.
2nd Singularity Septem: Germania (The Dark Forest) is the first location you unlock to farm Claw of Chaos, but the item rarely drops.
You can also farm Claw of Chaos at Wednesday Daily Quest: Berserker Traning Ground. For other item drops, check the table below.
| Quest | Item Drop |
|---|---|
| Berserker Training Ground |          |
| Ember Gathering [Archer/Caster] | EXP Cards (Archer, Caster & Berserker) |
| Enter the Treasure Vault | QP |
| US/EN (UTC) | |
|---|---|
 Ibaraki Douji event: Rashoumon May 16 - 30 | - |
| JP (JST) | |
 Fate/Apocrypha Event: Inheritance of Glory Apr 29 - May 13 |  Murder at the Kogetsukan May 11 - 18 |
| Master Missions | |
|---|---|
| JP May 7 - 13 | US May 7 - 13 |
| Pickup Servants | ||
|---|---|---|
 Shuten Douji | ||
| Pickup CEs | ||
 Fox's Night Dream |  Burning Love Story |  Subscription List Reading |
| Pickup Servants | |
|---|---|
 Achilleus (Achilles) |  Chiron |
| Pickup Craft Essences | ||
|---|---|---|
 A Pilgrimage Towards Him |  The Moment of Destruction |  Let's Depart! |
