Ancient Dragon's (Friday) Jave Castle

Castle Rush guide for Ancient Dragon's Castle in Seven Knights Re:Birth. Covering Friday's Jave Castle Best Team, Best Heroes, Strategy, Tips, and How to Get the Highest Score.

Castle Rush Guide
Rudy	Eileene	Rachel	Dellons
Jave	Spike	Kris

Ancient Dragon's Castle Overview

Enemy	Jave Rook Chancellor
Enemy Attack Type	Physical
Status Effects Inflicted	Burn (Dragonflame) Stun
Effective Status Effects	None
Other Features	- Performs a Counterattack - Upon Counterattack, 100% Crit Rate + 500% Crit Damage - Deals Pierce Damage - Magic Attack/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)

Ancient Dragon's Castle is one of Castle Rush's stages where you face the Seven Knights and earn points. It opens every Friday, 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.

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	Jave	Rook

Jave in Ancient Dragon's Castle uses attacks that inflict Stun and Burn, and Jave's Counterattacks gain an additional 100% Crit Rate and 500% Crit Damage. Meanwhile, Chancellor does Damage Reduction and Increased Missed Chance., making this stage difficult to clear without the right team setup.

Ancient Dragon's Castle Best Heroes

Burn Immunity

Choose One
Ariel	Yui

Stun Immunity

Choose One
Sieg	Evan

The enemy inflicts Dragonfire (Burn) and Stun, so units with Burn Immunity and Stun Immunity are required. Due to the enemy's high damage output, Yui is recommended for Burn Immunity as she can also serve as a healer. For Stun Immunity, select Evan if you need additional survivability, or Sieg if durability is sufficient and you want to maximize your score.

Physical Attacks on 3-4 Enemies

At Least One
Taka	Feng Yan	Jin	Bi Dam
Rachel	Kyle

All enemies in the Ancient Dragon’s Castle have Damage Resistance to Magic Attacks, Single-Target Skills, and 5-Target Skills. Use 3–4-Target Physical attacks instead. Kyle or Taka is the most recommended option, but if they're unavailable, it's best to train the F2P hero Feng Yan as an alternative.

Tips!	Note that Rachel's first skill is a single-target attack until she reaches 6-star Transcendence.

Blind, Barrier and Debuff

At least one
Rachel	Evan	May

In the third round, to counter Jave’s powerful Critical Attacks, use May to inflict Blind, Evan to apply a Barrier, or Rachel's All Attack Debuff. Notably, May's Blind has a 100% success rate against the enemy with the highest Attack, ensuring it always lands on Jave.

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 Jave.

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

Front Row	Front Row	Front Row	Front Row	Back Row
Sieg Evan Stun Immunity Tank	Yui Healer Burn Immunity	Biscuit Eileene Def Debuffer (Flex Slot)	Rachel Debuffer Sub DPS	Taka Kyle Physical 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
Evan Stun Immunity Tank	Yui Healer Burn Immunity	May Blind Biscuit Debuffer Lina Healer Def Debuffer	Rachel Debuffer Sub DPS Burn Immunity	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.

Ancient Dragon's Castle Tips & Strategy

Form Teams Effective Against Jave

The key to victory is bringing heroes with Physical Attacks, 3-Enemy Target skills, Stun Immunity, and Defense Heroes or Debuffer to counter Jave, 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 Jave's Ancient Dragon's 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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Immortal Castle Guide	Death Castle Guide	Ancient Dragon's Castle
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