Ariadne's Thread can be obtained by having Asterios reach Bond Level 10.
| Rarity | Cost |
|---|---|
| 4★ | 9 |
| Min | Max | |
|---|---|---|
| HP | 100 | 100 |
| ATK | 100 | 100 |
| Normal | When equipped to Asterios (Berserker) only, increase Quick Card effectiveness for all allies by 15% while on the field |
|---|
Ariadne's Thread is an exclusive CE to Asterios.
| 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! |
