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Sky of a Thousand Seas Supply Operation
Writer
Jul 21, 2026 (UTC)
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How to Participate
Click on the event HUD(
) icon.
Complete Event Missions by clearing Dungeons including Disciple of Doom!
Get extra rewards based on the number of repeat mission completions!
Event Mission
| Type | Mission | Rewards | ||
| Special | Log into Seria's Room |  |
Fatigue 156 Recovery Potion | |
| Repeat | Clear Disciple of Doom Dungeon 20 times (Repeatable 20 times weekly) |
 |
[Event] Doom Oracle Box (150)(1+1) | |
| Clear Sunken Depths Advanced Dungeon 2 times (Repeatable 2 times weekly) |
 |
Delilah's Repair Coupon (All Parts) x3 | ||
| Clear Sunken Depths Legion Dungeon 2 times (Repeatable 1 time weekly) |
 |
[Event] Lustrous Doom Doorplate Box | ||
| Clear Sunken Depths Raid Dungeon 2 times (Repeatable 1 time weekly) |
 |
[Event] Radiant Doom Doorplate Box | ||
| Accumulated | Clear Weekly Repeat Mission 10 times |  |
[Event] Doom Oracle Box (1000) | |
| Clear Weekly Repeat Mission 20 times |  |
[Event] Doom Oracle Box (1500) | ||
| Clear Weekly Repeat Mission 30 times |  |
[Event] Doom Oracle Box (2000) | ||
# Please Note
- This event can be participated in once per account.
- Weekly missions reset every Tuesday at 09:00 UTC. Accumulated Missions do not reset.
- With the exception of certain items, all unused rewards will be deleted at 09:00, AUG 4, 2026 UTC.
- The [Event] Doom Oracle Box (150) contained in the [Event] Doom Oracle Box (150)(1+1), along with the [Event] Doom Oracle Boxes (1000/1500/2000) obtained from Accumulated Missions can be used after the AUG 4, 2026 maintenance and will be deleted at 09:00, SEP 1, 2026 UTC.