This is a Castle Rush guide for Blizzard Castle in Seven Knights Re:Birth. Covering Saturday's Spike Castle, Best Team, Best Heroes, Strategy, and How to Get the Highest Score.
Table of Contents
Blizzard Castle Overview
| Enemy |  Spike Rook Chancellor |
| Enemy Attack Type |  Physical |
| Status Effects Inflicted |  Freeze |
| Effective Status Effects | None |
| Other Features | - Chancellor grants Spike's skill 100% Crit Rate + 500% Crit Damage - Magic Resist/Single-Target Skill/5-Target Skill Damage Resistance - Activates Berserk after 30 turns (Damage dealt increases by 50% → increases to 100% → 200% → 500% over turns) |
Blizzard Castle is one of Castle Rush's stages where you face the Seven Knights and earn points. It opens every Saturday, and rewards are distributed daily at 12 AM (UST+0) based on Guild Rank, which is determined by the total points earned by all members.
 Tips! | Guild members who don't participate will not receive rewards. |
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Enemy Info
| Round 1 | ||
|---|---|---|
| Rook | Chancellor | Rook |
| Round 2 | ||
| Rook | Chancellor | Rook |
| Round 3 | ||
| Rook | Spike | Chancellor |
In Blizzard Castle, Spike uses both single and multi-target skills that can inflict Freeze and deal devastating CRIT damage to units afflicted by the Blizzard debuff. Meanwhile, Blizzard Castle's Rook and Chancellor can also inflict Freeze and apply the Blizzard debuff, making this stage particularly difficult to clear without a suitable team setup.
Castle Rush GuideBlizzard Castle Best Heroes
Freeze Immunity
The enemy inflicts Freeze, so bringing a unit with Freeze Immunity is important; fighting without one puts you at a severe disadvantage. Since Magic damage is less effective, Feng Yan is recommended over Lania for this battle.
Physical Attacks on 3-4 Enemies
Jin
Bi DamWith both skills dealing high-damage 3-enemy attacks, Kyle or Taka is recommended for maximizing your score. If you don't have them, it's a good idea to prioritize raising the F2P hero Feng Yan.
| Tips! | Note that Rachel's first skill is a single-target attack until she reaches 6-star Transcendence. |
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Buff and Debuffs
Lina
Ace
DellonsIncrease your attacker's damage using buffs and debuffs. It's best to apply them in order, starting with those that have the longest duration.
Buff Removal
Vanessa
Noho
Joker
Soi
KyleWhen Chancellor uses his skill, Spike's skill will gain 100% Crit Rate + 500% Crit Damage. Quickly remove it with Buff Removal before Spike can use his skill.
| Tips! | When the buff is applied, an ice effect will appear around Spike. This indicates that the buff is still active. |
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Team Formation Examples
Premium Team 1
| Front Row | Front Row | Front Row | Front Row | Back Row |
|---|---|---|---|---|
 Feng YanFreeze Immunity |  LinaHealer Def Debuffer |  BiscuitBuff Removal Def Debuffer (Flex Slot) |  RachelDebuffer Sub DPS |  Taka KylePhysical Attack Main DPS |
If you have both Taka and Kyle, you may replace Rachel and use the Balanced Formation to place both DPS units in the back row, which may result in a higher score.
F2P Team
| Front Row | Front Row | Front Row | Front Row | Back Row |
|---|---|---|---|---|
 Soi Joker BiscuitBuff Removal | Feng Yan Freeze Immunity  May AceBuff/Debuffer |  YuiHealer | Rachel Debuffer Sub DPS | KyleFeng Yan Freeze Immunity Main DPS |
| Tips! | If your high-damage, 4-target physical attacker Kyle is more developed than Taka/Feng Yan, it's easier to achieve a higher score by making Kyle your main damage dealer. |
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Blizzard Castle Tips & Strategy
Form Teams Effective Against Spike
The key to victory is bringing Physical attackers with 3-Enemy Target skills, along with Freeze Immunity and Buff Removal to counter Spike, so adjust your lineup accordingly.
| Blizzard Castle | |
|---|---|
| Boss & Mechanics | Boss Spike inflicts Freeze and gains the Force of Blizzard and Blizzard's Breath buffs whenever Chancellor uses a skill. |
| Strategy | Use a hero with Freeze Immunity and a hero with Buff Removal to cancel Spike's enhanced skills and reduce damage. |
| Enemy Resistances | All enemies in Spike's Castle Rush have Magic Resistance, Single-Target Attack Resistance, and Quintuple-Target Attack Resistance. |
| Recommended Heroes | To maximize points, use Physical damage heroes with Triple-Target Attack skills. |
Use Protective Formation
Protective Formation is the recommended setup for Blizzard Castle. At Level 20, it boosts Back Row heroes' Attack by 26% and grants Front Row supports and healers a 6.5% Defense increase. Other formations can also work, but require more investment into your characters and gear.
| Tips! | Make sure to enhance the formation level for increased back row and front row effect. The higher the Formation level, the better. |
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Use Skill Queue
Auto Skills offer convenience, but they don't always select the optimal skills in critical situations. It's best to use the Skill Queue to start with a buff, then monitor combat and manually activate skills as needed.
| Tips! | Strategically, queue buffs first, such as 'Barrier', then use priority skills manually to gain the upper hand. |
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Enhance Your Hero
Enhance your heroes' skills, ultimate, and power-up to +5. Prioritizing tanks and healers to boost their effectiveness and utility. Skill & Ultimate Enhancement materials can be obtained from Story Event rewards, the Shop, and the Infinite Tower.
| Related Articles | ||
|---|---|---|
| Power Up Heroes | Upgrade Equipment | Enhance Formation |
How to Get the Highest Score
Use Physical Heroes with 3-Target Skills
All enemies in Spike's Blizzard Castle have Magic Resistance, Single-Target Attack Resistance, and Quintuple-Target Attack Resistance buff. To increase damage output and achieve a high score, use Physical-type heroes with Triple-Target Attack skills.
Sustain is Optional
The core mechanic of Castle Rush is to maximize total damage within the turn limit, as scores are based on the cumulative damage dealt before the final turn. If your team can endure without heavy support, focus on offense and buff removal instead to maximize score.
| Tips! | If your team struggles, bring a debuffer or crowd control to survive until the final turn. |
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Related Seven Knights Re: BIRTH Articles
▶Back to Top PageRanking Articles
| Ranking Articles | ||
|---|---|---|
 Best Hero Tier List |  Reroll Tier List |  Best Pet Tier List |
How To Reroll Fast?
Leveling & Ruby Farming Guide
Latest News & Updates
Daily Things to Do
Best Heroes and Teams
Advent Expedition Guide
Best Premium Shop Purchases
Best Low Rarity Heroes
The Root of the Storm Event
Should You Pull for Kyle & Aquila?
Children Chasing Stars Event
Brilliant Pumpkin Baskets Guide
Early Game Guide
Player Rank (Adventurer Skill) Guide
Enhance Guide
Equipment Powerup
Pet Guide
Formation Guide
Guild Guide
Party Guide
Gacha Animation Effects
Accessory Guide
Hero Stats Guide
Arena Guide
Coupon Codes
Infinite Tower Guide
Shop Items to Buy
Fodder Hero Guide
Tower of Trials Guide
7K Chess Guide
Equipment Preset Guide
Battle Statistics Guide
Recommended Relay Purchases Guide
Weakness Hit Guide & What is It?
Error Guide and How to Fix
Guild War Guide
Castle Rush Guide
Guardian's Castle Guide
Fodina Castle Guide
Immortal Castle Guide
Death Castle Guide
Ancient Dragon's Castle
Death Guide
Hell Castle Guide
Destroyer Gaze Guide
Ox King Guide
Iron Devourer
Raid Battle Guide
How to Beat Teo
Burn Guide
Paralysis Guide
Bleed Guide
Freeze Guide
Stun Guide
Petrify Guide
Shock Guide
Sleep Guide
Concussion Guide
Debuff Types Guide
Confusion Guide
Poison Guide
