This is a guide for the Sudden Raid in Seven Knights Re:BIRTH (7K Rebirth). It includes what is sudden raid. how to access, features, and more!
Table of Contents
| Raid Related Articles | |
|---|---|
| Raid Battle | Sudden Raid |
How to Access Sudden Raid
Clear Stage 11 to 15 Raids

Sudden Raids can be triggered after a set number of raids have been cleared across all players. Note that once a Sudden Raid is triggered, the probability resets.
Raid Battle GuideServerwide Progress
Progress toward triggering a Sudden Raid is tied to serverwide activity, allowing all players to contribute to spawning a raid.
Requires 1 Sudden Raid Ticket

Sudden Raids require one ticket to enter, and tickets are not refunded if a run is abandoned midway. Tickets can be obtained from clearing regular raids, specifically stages 11 to 15, as well as through the Honor Shop.
Sudden Raid Process
Season & Daily Details

| Standby |
|---|
| - Sudden Raids will be begin at designated times. - After one is triggered, a standby period begins, and the remaining time until this period is over will be displayed. - Sudden Raid cannot be entered during this period. |

| Battle |
|---|
| - Sudden Raid can only be entered during a specific window of time. - You have 10 hours to enter, and once that time runs out, no further entries are allowed. |

| Cooldown |
|---|
| - After Sudden Raid ends, a cooldown period begins and lasts for a set period of time. - During this time period, you can only check rankings and cannot enter combat. |

| Calculation |
|---|
| - Scores are calculated daily at a fixed time. After the calculation period is complete, Rank Rewards, and Collaboration Rewards will be sent via mail. |
Sudden Raid Rewards
New Equipment
| Boss | Set Effect |
|---|---|
| Calistra | Vanguard / Bounty Tracker / Paladin |
| Astrea | Gate Keeper / Guardian / Assassin |
| Leonid | Avenger / Spellweaver / Orchestrator |
New equipment will be available in Sudden Raid, providing players with additional sources to obtain gear.
Selectable Set Effect and Main Stat

Sudden Raids also allow players to select 2 set effects and 4 main stats before entering. This reduces the amount of randomness when obtaining gear.
New Crafting Material

A new crafting material, Essence of Memories, can be obtained as a reward and used to guarantee equipment with four substats.
Sudden Raid Strategy & Tips
Check Strategy Info and Form Your Team

You can view strategy information for each boss by clicking the Strategy button to the left of Enter. Check the information for the raid you are challenging and refer to recommended heroes to build your team.
Team Formation Guide and Examples
Different Attacks Are Effective for Each Boss
| Enemy | Effective Attack | Required Effects |
|---|---|---|
Leonid | Defense-ignoring Physical Attack | Shock Immunity Death Immunity Buff Removal |
Astrea | HP-proportional Magic Attack | Petrify Immunity Bleed Immunity Buff Removal Debuff Removal |
Calistra | Physical Attack | Blind Immunity Burn Immunity |
The effective attack types and necessary effects for countering gimmicks vary across the three types of bosses. Form your team based on each boss's unique characteristics.
Include Heroes with Status Ailment Immunity
Countermeasures against status ailments are extremely important in Sudden Raids. Since you will be at a severe disadvantage without protection, always include heroes with Status Ailment Immunity.
Immunity Required for Each Raid
| Leonid | |
|---|---|
Shock Immunity | Guan Yu Chloe |
Death Immunity | Leo Xiao |
| Astrea | |
Petrify Immunity | Daisy Black Rose |
Bleed Immunity | Karon Lee Joohee |
| Calistra | |
Blind Immunity | Zhao Yun |
Burn Immunity | Ryan Ariel Yui |
Use Heroes That Match Each Boss's Characteristics
Since each boss has different traits such as Leonid being vulnerable to Defense-ignoring physical attacks and Astrea to HP-proportional magic attacks, you should use heroes that are well-suited to those specific traits.
Required Effects and Example Heroes for Each Boss
| Leonid | Single-target Defense-ignoring Physical Attacker Bai Long Guan Yu |
|---|---|
Buff Removal Fai Kyle Radgrid Guan Yu | |
| Astrea | Single-target Max HP-Based Magic Attacker Espada |
All-Target Buff Removal Daisy Black Rose | |
Debuff Removal Orly Reginleif Miho Xiao Qiao Bai Jiao Lucy Lee Joohee | |
| Calistra | Single-Target Physical Attacker Shane Bai Long Jupy |
All Attack Reduction Rachel Colt Radgrid |
Refer to Top Players' Teams

By clicking the magnifying glass icon, you can view the team compositions of top-ranked players. If you have the same heroes, it is a good idea to model your own team after theirs.
Recommended Team Examples
Leonid
| Front | Front | Front | Front | Back |
|---|---|---|---|---|
BiscuitBuff/Debuff | Guan YuShock Immunity Buff Removal | XiaoDeath Immunity Debuff Barrier | Lu BuBuff/Debuff Sub DPS | Bai LongMain DPS Healing |
Shock Immunity, Death Immunity, and a Defense-ignoring Physical Attacker are essential. The Buff/Debuff slots are flexible; you can swap them for other support characters, or tanks and healers if your team is being defeated too quickly.
Astrea
| Front | Front | Front | Front | Back |
|---|---|---|---|---|
BiscuitBuff/Debuff | DaisyPetrify Immunity Buff Removal Barrier Sub DPS | KaronBleed Immunity Healing | MihoDebuff Removal Buff/Debuff | EspadaMain DPS |
Petrify Immunity, Bleed Immunity, HP-proportional Magic Attacker, and Debuff Removal are essential. For the Debuff Removal slot, Lucy (Cooldown Reduction & Healing), Orly (Crit Rate & Crit Damage boost), Xiao Qiao (Sub-attacker), or Bai Jiao are also good candidates.
Calistra
| Front | Front | Front | Front | Back |
|---|---|---|---|---|
BiscuitBuff/Debuff | Zhao YunBlind Immunity | YuiBurn Immunity Healing | RachelBuff/Debuff | ShaneMain DPS |
Blind Immunity, Burn Immunity, and a High-DPS Physical Attacker are essential. Including a character with an All Attack Reduction debuff will help reduce Calistra's damage dealt while making it easier to utilize Shane's Damage Boost, which scales with the number of enemy debuffs.
What is Sudden Raid

Sudden Raid is a PvE mode that features three new raid bosses and rewards players with six star equipment, with an increased chance of obtaining four substat lines.
Sudden Raid Schedule
| Sudden Raid Schedule (UTC+0) | |
|---|---|
| Discovery Time | Battle Opening Window |
| 17:00 ~ 21:00 | Calculation Period |
| 21:00 ~ 07:00 | 07:00 |
| 07:00 ~ 17:00 | 21:00 |
| [When Calculation do not take place] 07:00 ~ 21:00 | 21:00 |
Sudden raid will follow a rotational schedule and will not be available during the Calculation Period.
Related Seven Knights Re: BIRTH Articles
Ranking Articles
| Ranking Articles | ||
|---|---|---|
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Recommended Articles
Dungeon, Raids, and Towers
| Tower Guides | |
|---|---|
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| Debuff Types | |||
|---|---|---|---|
| Lists | ||
|---|---|---|
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Shock Immunity 

Death Immunity 

Petrify Immunity 

Bleed Immunity 

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