Seven Knights Rebirth | Calistra Sudden Raid Guide - Best Teams and How to Clear

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This covers the Calistra Raid in Seven Knights Re:BIRTH (7K Rebirth). It includes the boss's details, available rewards, the best team, and tips to defeat Calistra efficiently..

Table of Contents

Calistra Sudden Raid Basic Information
Team Building Tips & How to Clear
Best Team Comps
What is a Sudden Raid?

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Leonid	Astrea	Calistra

Sudden Raid Guide

Calistra Sudden Raid Basic Information

Enemy Information

Enemy	Calistra
Enemy Attack Type	Magic
Status Ailments Inflicted	Blind Burn
Other Features	- Magic Resistance - Attack increases every turn - Deals bonus damage to Blind/Burn targets

Clear Rewards

Sudden Raid Rewards

Type	Details	Reward Items
Rank Reward	Rank reward based on damage dealt to the boss Higher ranks increase the chance of 4 Substats	Equipment Essence of Memory
Ranking Reward	Reward based on total damage ranking	Essence of Memory Chaos Essence Oblivion Essence
Discovery Reward	Individual reward for the player who triggered the Sudden Raid	Essence of Memory
Cooperation Reward	Participation reward for defeating the boss	Essence of Memory

Calistra Equipment Rewards

Equipment	Set
★6 Brilliant Twilight Dual Blades	Vanguard Bounty Tracker Paladin
★6 Brilliant Twilight Feather Fan
★6 Brilliant Twilight Cloak

Equipment Power Up Guide - How to Upgrade & Enhance

Team Building Tips & How to Clear

Burn and Blind Immunity are a must
└Yui/Ryan and Zhao Yun are the best picks
Boost damage with buffs and debuffs
└Attack Reduction debuffs are also useful
Single Enemy physical attackers to whittle down HP
└Shane is the best pick
Prioritize healing and Barriers when HP is low

Burn and Blind Immunity Are a Must

List of Burn Immunity Heroes
Ariel	Yui	Ryan

List of Blind Immunity Heroes
Zhao Yun

The enemy inflicts Burn and Blind, so be sure to bring heroes with Burn Immunity and Blind Immunity. For Burn Immunity, Yui (who can double as a healer) or Ryan (who can shorten cooldowns) are the best picks. Currently, Zhao Yun is the only hero with Blind Immunity.

Tips!	When using Ryan, he's easily defeated, so it's important to have a high-damage attacker.

You Can Also Handle It With Debuff Removal

Examples of Debuff Removal Heroes
Ace	Chloe	Lucy	Orly
Kagura	Elysia	Bai Jiao	Guan Yu
Cha Hae-in	Lee Joohee	Karl Heron	Hellenia
Rudy	Hayeon	Zenitsu Agatsuma

Burn and Blind aren't status ailments that stop your actions, so handling them with Debuff Removal skills is also a valid option. Among the heroes above, Guan Yu and Kagura are especially good picks since they can also provide damage buffs.

Boost Damage With Buffs and Debuffs

Attack Reduction Heroes
Rachel	Aragon	Chancellor	Colt
Radgrid	Deo

First, boost your attacker's damage with buffs and debuffs. Since Calistra hits hard, an All Attack Reduction debuff is also a good idea. That said, it's also possible to clear this by enduring the damage with Xiao's Barrier or Lina's healing instead.

Use a Single Enemy Physical Attacker to Whittle Down HP

Single Enemy Physical Attackers
Sieg	Jupy	Snipper	Shane
Bai Long

Since Calistra has Magic Resistance, attack with a Single Enemy-focused physical attacker. Shane is a great pick, as his damage increases the more debuffs (such as Attack Reduction) are on the enemy.

Tips!	Skills tend to deal less damage per hit as their attack range increases, so single-target skills are the better choice in battles against a single enemy.

Prioritize Healing and Barriers When HP is Low

HP Recovery Heroes
Karon	Yui	Lina	Lucy
Orly	Sun Wukong	Lee Joohee	Heavenia

Barrier Generation
Evan	Rook	Asura	Xiao

When your party's HP starts to drop, prioritize recovering with healing or Barrier generation. If healing isn't enough, try adding more of these heroes.

Best Team Comps

Damage-Focused Team

Team Formation: Defense

Biscuit

Kagura

Fai

Eileene

Sunran

Buff/Debuff

Buff
Debuff Removal

Main Damage
Debuff

Buff/Debuff

Sub Damage
Buff/Debuff

This team has every hero equipped with a Buff or Debuff passive, aiming for a quick, damage-focused battle. Depending on the damage output of Fai, Sunran, and Eileene, you can defeat the boss in around 10 turns.

Target Stats

Hero	Target Stat	Notes
	100%	Magic-type hero, so lean toward durability
	29 or higher	Higher than the boss's
	29 or higher	Best if 1st-2nd highest in the party
	Needs adjustment	Keep it 3rd or lower in the party
	Around 90%	For boosting score
	200% and up	The higher, the better
	29 or higher	Higher than the boss's
	5000 and up	Keep it 1st-2nd highest in the party
	Around 90%	The higher, the more stable
	250% and up	The higher, the better
	0%	Reaches 100% with T6 Passive
	29 or higher	Higher than the boss's
	4000 and up	Keep it 1st-2nd highest in the party
	Around 90%	The higher, the more stable
	220% and up	The higher, the better
	Around 40%	Around 90% with Biscuit's buff
	29 or higher	Higher than the boss's

Keep everyone's Speed higher than the boss's, to help prevent the boss from inflicting Blind with a Basic Attack before your attacker can use their skill.

Keeping Kagura's Speed as the 1st-2nd highest means that after the boss's Blind skill, Burn damage triggers Indomitable, making it easier to time her Debuff Removal.

Point!

For Kagura, it's best to equip only one Speed piece and nothing else, so she gets defeated as quickly as possible.

Best Equipment & Rings

Hero	Equipment	Ring (Refine)
Biscuit
Eileene
Sunran
Fai

Magic attacks don't land easily, so give Biscuit Gatekeeper equipment to lean into sustain. For Kagura, we recommend equipping only one piece that boosts Speed, while Avenger is best for the other heroes.

Best Pets

Ideal	Alternate	Alternate	Alternate
Windy	Jeo	Eirin	Igris

For pets, Windy, who can inflict Boss Vulnerability, is the best choice. If you don't have her, use Eirin, Jeo, or the collab rare pet Igris instead.

Alternate Heroes

Main Hero	Alternate Hero	Notes
	Guan Yu	Alternate for Debuff Removal
	Zhao Yun	Alternate for Blind countermeasures
	Rachel	Alternate for Buffs/Debuffs
	Lu Bu	Alternate for Buffs/Debuffs
	Shane	Alternate Attacker

If a quick clear proves difficult, swap out Kagura for Guan Yu, who has Debuff Removal, or Zhao Yun, who has Blind Immunity.

Auto Skill Queue

Priority	Skill	Hero
1	Skill 1	Biscuit
2	Skill 1	Eileene
3	Skill 2	Fai
4	Skill 2	Sunran
5	Skill 1	Sunran

Apply Biscuit and Eileene's buffs/debuffs, then whittle down HP with Fai and Sunran's skills. If the fight looks like it'll drag on, it's also a good idea to set Sunran's Awakening Skill and Fai's Skill 1 in the queue.

Balanced Team with Yui

Front Row	Front Row	Front Row	Front Row	Back Row
Biscuit Buffs/Debuffs	Yui Burn Immunity Healing Buffs	Zhao Yun Blind Immunity	Rachel Buffs/Debuffs	Shane Main Damage Dealer

This is a balanced team example that uses Yui for Burn Immunity and slots in Rachel, who pairs well with Shane, as the buff/debuff hero. The advantage here is that even if Shane gets defeated, Yui can revive him.

Balanced Team with Ryan

Front Row	Front Row	Front Row	Front Row	Back Row
Biscuit Buffs/Debuffs	Ryan Burn Immunity Cooldown Reduction	Zhao Yun Blind Immunity	Xiao Buffs/Debuffs Barrier Healing	Shane Main Damage Dealer

This is a balanced team example that uses Ryan for Burn Immunity and slots in Xiao, who can generate Barriers and heal HP, as the buff/debuff hero. This is recommended for those who have invested more in Ryan than in Rachel.

Sustain-Leaning Team

Front Row	Front Row	Front Row	Front Row	Back Row
Biscuit Buffs/Debuffs	Yui Burn Immunity Healing Buffs	Zhao Yun Blind Immunity	Lina Healing Buffs/Debuffs	Shane Main Damage Dealer

This is a sustain-leaning team example that uses Yui for Burn Immunity and also includes Lina, giving you two healers. Since this increases the number of turns needed, an SS score rank becomes difficult, but it's recommended for those who want to reliably aim for an S rank.

Damage-Leaning Team

Front Row	Front Row	Front Row	Front Row	Back Row
Biscuit Buffs/Debuffs	Ryan Burn Immunity Cooldown Reduction	Zhao Yun Blind Immunity	Rachel Buffs/Debuffs	Shane Main Damage Dealer

This is a damage-leaning team example that uses Ryan for Burn Immunity. The number of turns needed tends to decrease, but with no healer, your heroes are more likely to be defeated, so you'll need to either push through with Shane's high damage output or take steps like equipping a Revival Ring on your front row.

Point!

This is an advanced team aimed at reaching the top of the rankings!

Best Equipment for Each Hero

Hero	Equipment Example	Best Options
Biscuit	①Gatekeeper×Revival Ring	HP DEF Block Rate Damage Taken Reduction
Ryan	①Avenger×Boss Ring ②Gatekeeper×Revival Ring	①Crit Rate Crit Damage Dealt Weakness Hit Chance All Attack ②HP DEF Block Rate Damage Taken Reduction
Yui	①Paladin×Revival or HP Ring	HP DEF Block Rate Damage Taken Reduction
Zhao Yun	①Avenger×Boss Ring ②Gatekeeper×Revival Ring	①Crit Rate Crit Damage Dealt Weakness Hit Chance All Attack ②HP DEF Block Rate Damage Taken Reduction
Rachel	①Avenger×Boss Ring ②Gatekeeper×Ring of Authority	①Crit Rate Crit Damage Dealt Weakness Hit Chance All Attack ②HP DEF Block Rate Damage Taken Reduction
Xiao	①Avenger×Boss Ring ②Gatekeeper×Revival Ring	①Crit Rate Crit Damage Dealt Weakness Hit Chance All Attack ②HP DEF Block Rate Damage Taken Reduction
Shane	①Avenger×Boss Ring	Crit Rate Crit Damage Dealt Weakness Hit Chance All Attack

To shorten your clear turns, damage-focused equipment is generally best. However, since Biscuit's magic attacks don't land easily, support-focused Gatekeeper equipment is better for her, and Paladin equipment is recommended for Yui to boost her healing amount.

For other support heroes, adjust their equipment based on the balance between how easily they're defeated and how much damage they deal.

What is a Sudden Raid?

Occurs Randomly When You Clear Raid Stages 11-15

A Sudden Raid is a special Raid that can randomly occur when you clear stages 11-15 of a regular Raid. Anyone who has cleared stage 10 of that Raid can join in, working together to defeat the boss.

Raid Battle Guide

Sudden Raid Guide List

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Leonid	Astrea	Calistra