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This covers the Astrea Sudden Raid in Seven Knights Re:BIRTH (7K Rebirth). It includes the boss's details, available rewards, the best team, and tips to defeat Astrea efficiently.
Contents
Astrea Sudden Raid Basic Information
Enemy Information
| Enemy |  Astrea |
|---|---|
| Attack Type |  Magic |
| Status Ailments |  Petrify Bleed |
| Other Features | - Summons Dike - Physical Damage Resistance - Attack increases every turn - Damage Resistance + Damage Boost while Dike is alive - Back Row All Attack Reduction - Additional damage against targets with Petrify/Bleed - Dike - Damage Resistance - 3rd basic attack deals 99,999 Pierce Damage + self-destructs |
Clear Rewards
Sudden Raid Rewards
| Type | Details | Reward Item |
|---|---|---|
| Rank Rewards | Rewards based on damage dealt to the boss. Higher ranks increase the chance of 4 substats. | Equipment Essence of Memories |
| Ranking Rewards | Rewards based on total damage ranking. | Essence of Memories Chaos Essence Oblivion Essence |
| Discovery Rewards | Personal reward for the player who triggered the raid. | Essence of Memories |
| Participation Rewards | Reward for participating in the boss defeat. | Essence of Memories |
Astrea Equipment Rewards
| Equipment | Set |
|---|---|
| 6★ Brilliant Dawn Spear | GatekeeperGuardianAssassin |
| 6★ Brilliant Dawn Staff | |
| 6★ Brilliant Dawn Crown |
Team Composition Tips & Strategy
- Petrify and Bleed immunity are required
- Daisy and Karon are recommended - Defeat Dike with Buff Removal
- Remove Barriers with Buff Removal
- Use Biscuit - Use Single-Target Magic Attackers with Max HP-Based Damage
- Espada is highly recommended - Prioritize Healing and Barriers when HP is low
- Xiao is Recommended
Petrify and Bleed Immunity are Required
| Heroes with Petrify Immunity | |
|---|---|
| Heroes with Bleed Immunity | |
|---|---|
The enemy applies Petrify and Bleed. Since you will be at a extreme disadvantage without protection, be sure to include Heroes with Petrify and Bleed immunity. Daisy is recommended for Petrify immunity as she can also provide barriers and Max HP-based attacks.
Defeat Dike with Buff Removal
Astrea summons four Dike at the start of the battle. Since Dike has Damage Resistance and is very difficult to damage, remove the resistance with Buff Removal to defeat them. Daisy is recommended as she can remove buffs from all enemies.
 Tips! | Dike performs a self-destruct attack that deals 99,999 damage on its 3rd basic attack. If Daisy alone cannot defeat them, use Biscuit's Buff Removal as well to take them down as quickly as possible. |
|---|
Boost DPS with Buffs and Debuffs
Once Dike is defeated, use buffs and debuffs to increase your attacker's damage. It is recommended to use buffs and debuffs with longer durations first.
Clear Attack Reduction with Debuff Removal
| Examples of Heroes with Debuff Removal | |||
|---|---|---|---|
When your back row's attack is reduced, clear it with Debuff Removal. Orly or Miho are recommended as they can also provide offensive buffs. However, since both require Transcendence Level 2 for Debuff Removal, you may need to use other Heroes like Xiao Qiao if they are at a lower level.
| Tips! | Reginleif's Debuff Removal only triggers when 5 Magic-type Heroes are on the team. Currently, it is difficult to use her since there are no Magic-type Heroes with Bleed immunity, but she may become an option if they are added in the future. |
|---|
Use Single-Target Magic Attacker (Max HP-Based Damage)
Astrea has Physical Damage Resistance and very high HP, so attack with heroes that possess single-target Max HP-based damage skills. Espada is the most suitable attacker, especially since her damage increases when enemies are defeated.
Prioritize Healing and Barriers when HP is Low
When your team's HP drops, prioritize stabilizing with healing or barriers. If healing is insufficient, consider adding more of these Heroes to your team.
Recommended Team Examples
Basic Team Example
| Front | Front | Front | Front | Back |
|---|---|---|---|---|
| Biscuit Buff/Debuff Buff Removal | Daisy Sub DPS Petrify Immunity Buff Removal Barrier | Karon Bleed Immunity Healing | Miho Debuff Removal Buff/Debuff | Espada Main DPS Debuff |
This is a team example using Miho for Debuff Removal. Orly may provide more stability in this slot as she can also apply continuous healing. However, Miho is generally preferred for her skill cooldown synergy.
| Tips! | Since Astrea has 0 defense, there is no need to use defense reduction debuffs when using Orly. |
|---|
Equipment Examples for Each Hero
| Hero | Equipment Example | Recommended Stats |
|---|---|---|
| Biscuit | 1. Gatekeeper Set & Ring of Resurrection 2. Guardian Set & Ring of Subjugation | 1. HP, Defense, Block Rate, Damage Taken Reduction 2. Crit Rate, Crit Damage Dealt, Weakness Hit Chance, All Attack |
| Daisy | 1. Guardian Set & Ring of Subjugation | Crit Rate, Crit Damage Dealt, Weakness Hit Chance, All Attack |
| Karon | 1. Gatekeeper Set & Ring of Resurrection 2. Guardian Set & Ring of Subjugation | 1. All Attack, HP, Defense, Block Rate, Damage Taken Reduction 2. Crit Rate, Crit Damage Dealt, Weakness Hit Chance, All Attack |
| Miho | 1. Guardian Set & Ring of Subjugation | Crit Rate, Crit Damage Dealt, Weakness Hit Chance, All Attack |
| Espada | 1. Guardian Set & Ring of Subjugation | Crit Rate, Crit Damage Dealt, Weakness Hit Chance, All Attack |
Offensive equipment is generally recommended to shorten clear times. However, support Heroes like Biscuit and Karon can also be equipped with Gatekeeper gear for stabilization, depending on the balance with survival needs.
What is Sudden Raid?
Triggers Randomly when Clearing Raid Floors 11-15
Sudden Raid is a special type of raid that has a chance to appear after clearing floors 11 to 15 of a standard Raid. This content is open to all users who have cleared floor 10 of any raid, allowing them to cooperate to defeat the boss.
Sudden Raid Guide List
Related Seven Knights Re: BIRTH Articles
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