Death Castle (Thursday) Dellons Guide

This is a Castle Rush guide for Death Castle in Seven Knights Re:Birth. Covering Thursday's Dellons Castle, Best Team, Best Heroes, Strategy, Tips, and How to Get the High Score.

Castle Rush Guide
Rudy	Eileene	Rachel	Dellons
Jave	Spike	Kris

Death Castle Overview

Enemy	Dellons Rook Chancellor
Enemy Attack Type	Physical
Status Effects Inflicted	Silence
Effective Status Effects	None
Other Features	- All Damage Nullification when an enemy is incapacitated. - Skill 2 is a single-target attack that deals 300% of Dellons' Physical Attack 5 times. - If Skill 2 defeats an enemy, it activates again. - 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)

Death Castle is one of Castle Rush's stages where you face the Seven Knights and earn points. It opens every Thursday, and rewards are distributed daily at 12 AM (UTC+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.

Main Rewards

Category	Rewards
Personal Rewards	Guild Token Gold Key Castle Rush Challenge Medals
Guild Rewards	Hero Ticket per Guild Rank Gold Box per Guild Rank Castle Rush Challenge Medals
Challenge Missions	Key Bundle Leah Skill Enhancement Stone Gold Rare Hero Selector Hero Summon Voucher

Castle Rush offers Personal Rewards, Guild Rewards, and Challenge Mission Rewards. For the Guild Reward's Hero Summon Card, higher Ranks increase the chance of obtaining Seven Knights, so work together with your Guild to achieve a high score.

Tips!	You can also exchange 4000 Castle Rush Challenge Medals for a Seven Knights Summon Card at the Guild's Exchange Shop

Enemy Info

Round 1
Rook	Chancellor	Rook
Round 2
Rook	Chancellor	Rook
Round 3
Rook	Dellons	Chancellor

In Death Castle, Dellons uses powerful Single-Target attacks that can inflict Silence and grant himself a Damage Nullification buff. Meanwhile, Death Castle Rook and Chancellor can also inflict Silence and possess Magic Damage Resistance, making this stage difficult to clear without the right team setup.

Death Castle Best Heroes

Silence Immunity

Choose One
Jin	Cleo

The enemy inflicts Burn, and without countermeasures, you'll be at a major disadvantage. Make sure to include a hero with Silence Immunity. Since magic damage is less effective here, Jin is recommended over Cleo.

Physical Attacks on 3-4 Enemies

At Least One
Taka	Feng Yan	Jin	Bi Dam
Rachel	Kyle

With both skills dealing high-damage 3-enemy attacks, Taka is recommended for maximizing your score. If you don't have him, 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.

Taunt or Attack Debuff

At Least One
Rachel	Li

To avoid being defeated by Dellons' high-damage single-target skill, it's recommended to use Li, who has both Taunt and Physical Damage Immunity. As your party grows stronger, you can also survive using Rachel's Damage and All Attack Reduction.

Tips!	Increase Rachel's Weakness Hit Chance or raise her to 6-star Transcendence, where her first skill hits 3 enemies, to ensure her All Attack Reduction affects Dellons.

Buff and Debuffs

Versatile Support Heroes
Biscuit	Lina	Rachel	May
Ace	Dellons

Increase your attacker's damage using buffs and debuffs. It's best to apply them in order, starting with those that have the longest duration.

Team Formation Examples

Premium Team 1

Front Row	Front Row	Front Row	Front Row	Back Row
Jin Silence Immunity	Lina Healer Def Debuffer	Biscuit Buff Removal Def Debuffer (Flex Slot)	Rachel Debuffer Sub DPS	Taka Kyle Physical Attack Main DPS

F2P Team

Front Row	Front Row	Front Row	Front Row	Back Row
Jin Cleo Silence Immunity	Li Taunt	Yui Healer	Rachel Debuffer Sub DPS	Kyle Feng Yan Physical Attack 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.

Death Castle Tips & Strategy

Form Teams Effective Against Dellons

The key to victory is bringing Physical attackers with 3-Enemy Target skills, along with Silence Immunity and 'Defense' heroes or Debuffer to counter Dellons, so adjust your lineup accordingly.

Use Protective Formation

Protective Formation is the recommended setup for Death 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.

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.

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.

How to Get the Highest Score

Use Physical Heroes with 3-Target Skills

All enemies in Dellons' Death 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 debuff instead to maximize score.

Tips!	If your team struggles, bring a debuffer or crowd control to survive until the final turn.

Related Seven Knights Re: BIRTH Articles

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Ranking Articles

Ranking Articles
Best Hero Tier List	Reroll Tier List	Best Pet Tier List

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Articles To Check
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
For Early Game
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	Best Low Rarity Heroes
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
Rank Up Dungeons
Fire Dungeon	Water Dungeon	Earth Dungeon
Light Dungeon	Dark Dungeon	Gold Dungeon
Castle Rush Articles
Castle Rush Guide	Guardian's Castle Guide	Fodina Castle Guide
Immortal Castle Guide	Death Castle Guide	Ancient Dragon's Castle
Blizzard Castle Guide	Death Guide	Hell Castle Guide
Raid Guides
Destroyer Gaze Guide	Ox King Guide	Iron Devourer
Raid Battle Guide
Advent Expedition
Advent Expedition Guide	How to Beat Teo
Debuff Types
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
Lists
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Story Cinematics	-	-

Hero Per Specialty

By Grade
Legendary					Rare					Uncommon					Common
By Max Star Rank
6★					5★					4★					3★
Per Type
Attack				Magic				Defense				Support				Universal
By Attack-Type
Physical										Magic