Mercia Castle compositions for Avalon

Thelas profile picture

Written by Thelas

Published on: 2026-03-15

Updated on: 2026-03-15

With so many possibilities of team-building players can be overwhelmed about what teams to use in Avalon.

In this guide I will talk about compositions you could use in Mercia Castle.

This guide assumes you have all characters in equal dupes

Even the best characters can perform worse when compared to max dupe lower tier units. Use this guide as a reference and change based on your account investment.

Gates

Lueira character portrait

Lueira
Morgan le Fay character portrait

Morgan le Fay
Summer Merry character portrait

Summer Merry

Morgan le Fay Morgan le Fay Morgan le Fay BrokenWizardHolyMiddle is pretty much staple in every content thanks to her cooldown reduction AND amazing damage.

Summer Merry Summer Merry Summer Merry Tier 1WizardFrostBack has good synergy with Morgan le Fay Morgan le Fay Morgan le Fay BrokenWizardHolyMiddle due to both being mages and excellent burst damage with her ultimate.

Lueira Lueira Lueira BrokenHealerFrostBack on other hand deals good chunk of damage with elemental advantage, her only issue is her damage can be unreliable sometimes due to low critical chance.

Belsey character portrait

Belsey
Galahad character portrait

Galahad

Galahad Galahad Galahad Tier 0KnightRadianceFront is your best option for buffing your wizards.

Belsey Belsey Belsey BrokenKnightFireFront also fits pretty well since she indirectly buffs wizards and Lueira Lueira Lueira BrokenHealerFrostBack while Galahad Galahad Galahad Tier 0KnightRadianceFront can’t.

  1. Lueira Lueira Lueira BrokenHealerFrostBack
  2. Galahad Galahad Galahad Tier 0KnightRadianceFront
  3. Morgan le Fay Morgan le Fay Morgan le Fay BrokenWizardHolyMiddle
  4. Belsey Belsey Belsey BrokenKnightFireFront
  5. Summer Merry Summer Merry Summer Merry Tier 1WizardFrostBack
back Row
Summer Merry
Summer Merry
Weapon
Armor
Trinket
Rune
A Girl's Secrets (Palamedes)
A Girl's Secrets (Palamedes)
back Row
Lueira
Lueira
Weapon
Armor
Trinket
Rune
Water Dragon's Blessing (Merlin)
Water Dragon's Blessing (Merlin)
mid Row
Morgan le Fay
Morgan le Fay
Weapon
Armor
Trinket
Rune
Goddess of Destruction (Tiamat)
Goddess of Destruction (Tiamat)
front Row
Belsey
Belsey
Weapon
Armor
Trinket
Rune
Permeating Sensuality (Anessa)
Permeating Sensuality (Anessa)
front Row
Galahad
Galahad
Weapon
Armor
Trinket
Rune
Charm (Lilith)
Charm (Lilith)
Back
Mid
Front
Tiamat
Tiamat
Ran
Ran
Lohengrin
Lohengrin
Open in Team Builder
Be mindful of damage reduction of gates

First gate has 25% damage reduction while second gate has 50%. I recommend nullifying this reduction with stacking ignore damage reduction from pets.

Castle Boss

Although Cristina Cristina Cristina Tier 1WizardFireMiddle is playable character, her kit is based on an older version and different from ours:

  • Basic attack that hits 1 closest target
  • 30% Root resistance
  • Active skill that hits whole party and inflicts burn for 6 seconds, ticks every second. These ticks can crit and blocked. 9 second cooldown.
  • Passive skill that increases her attack by 24%
  • Ultimate skill that hits whole party and inflicts burn for 6 seconds, ticks every second. These ticks can crit and blocked. 34 second cooldown.

With Morgan le Fay Morgan le Fay Morgan le Fay BrokenWizardHolyMiddle it has become really easy to achieve much higher numbers in damage but boss also hits harder as you go up higher in numbers.

The problem is when Morgan’s mark procs burn damage increases heavily afterwards.

Make sure there are no delays in rotation!

I didn’t include any timings for skills, rotation is somewhat auto-friendly, however even a slight delay can mess it up.

  1. Galahad Galahad Galahad Tier 0KnightRadianceFront
  2. Morgan le Fay Morgan le Fay Morgan le Fay BrokenWizardHolyMiddle
  3. Summer Merry Summer Merry Summer Merry Tier 1WizardFrostBack
  4. Cristina Cristina Cristina Tier 1WizardFireMiddle does her Ultimate
  5. Isabel Isabel Isabel Tier 0ArcherFrostFront
  6. NEO Bedivere NEO Bedivere NEO Bedivere Tier 0ArcherHolyMiddle
  7. Galahad Galahad Galahad Tier 0KnightRadianceFront
  8. Morgan le Fay Morgan le Fay Morgan le Fay BrokenWizardHolyMiddle
  9. Isabel Isabel Isabel Tier 0ArcherFrostFront
  10. Summer Merry Summer Merry Summer Merry Tier 1WizardFrostBack
  11. Cristina Cristina Cristina Tier 1WizardFireMiddle does her Ultimate again
  12. NEO Bedivere NEO Bedivere NEO Bedivere Tier 0ArcherHolyMiddle
This is not the most optimal build

In this composition I prioritized consistency, ease of use and survival.

Generally, if you want more damage you need to sacrifice more survivability and rely more on RNG.

back Row
Summer Merry
Summer Merry
Weapon
Armor
Trinket
Rune
A Girl's Secrets (Palamedes)
A Girl's Secrets (Palamedes)
mid Row
NEO Bedivere
NEO Bedivere
Weapon
Armor
Trinket
Rune
Charm (Lilith)
Charm (Lilith)
mid Row
Morgan le Fay
Morgan le Fay
Weapon
Armor
Trinket
Rune
Goddess of Destruction (Tiamat)
Goddess of Destruction (Tiamat)
front Row
Isabel
Isabel
Weapon
Armor
Trinket
Rune
Holy Grail Spirit (Abyss Floor 30)
Holy Grail Spirit (Abyss Floor 30)
front Row
Galahad
Galahad
Weapon
Armor
Trinket
Rune
Holy Sword's Blessing (Ethan)
Holy Sword's Blessing (Ethan)
Back
Mid
Front
Tiamat
Tiamat
Ran
Ran
Lohengrin
Lohengrin
Open in Team Builder

How this works

Summer Merry character portrait

Summer Merry

Summer Merry Summer Merry Summer Merry Tier 1WizardFrostBack is our flex character in this comp.

Her excellent burst damage works pretty good with Morgan Le Fay. I recommend using Morgan le Fay Morgan le Fay Morgan le Fay BrokenWizardHolyMiddle ’s card for maximum damage.

I prefer her over Lueira Lueira Lueira BrokenHealerFrostBack because she doesn’t synergise well with Isabel Isabel Isabel Tier 0ArcherFrostFront . The reason is your shield loses durability even if you are under Isabel Isabel Isabel Tier 0ArcherFrostFront ’s immunity making you lose both every attack.

You can run Lueira Lueira Lueira BrokenHealerFrostBack instead but you will get less damage assuming equal investment of course.

Galahad character portrait

Galahad

Galahad Galahad Galahad Tier 0KnightRadianceFront will be the one doing tanking for the most part. In terms of gear she should get best trinket and armor because of that.

You can use Fragarach Fragarach Fragarach Main Stats Item Level: 230Melee Attack: 1861 Unique Stats Added Target II: Basic attack number of targets increased by 2Sword of Judgment: Decreases Target's Defense 1% per stack, up to 24 stacks. Inflicts damage equal to 312% of Attack.Critical Hit Chance: 20%Ignore Damage Reduction: 10%Critical Damage: 30%Boss Attack: 240 instead of Balisada Balisada Balisada Main Stats Item Level: 180Melee Attack: 1455 Unique Stats Blizzard Storm: Freeze enemy for 1.5sAdded Target I: Basic attack number of targets increased by 1Critical Damage: 55%Attack: 25%Boss Attack: 240 but be aware that it might affect the rotation.

She uses Ethan Ethan Ethan Tier 4KnightFrostFront card to insure you against RNG however you can drop it for Anessa Anessa Anessa Tier 1KnightFrostFront or Enya Enya Enya Tier 2ArcherFireBack card if you want to increase your damage.

Isabel character portrait

Isabel

Isabel Isabel Isabel Tier 0ArcherFrostFront is one of the most used characters for this fight. Her hit invulnerability is almost mandatory against Cristina Cristina Cristina Tier 1WizardFireMiddle , allowing you to fend off burn dot.

During Cristina Cristina Cristina Tier 1WizardFireMiddle ’s second ultimate Isabel Isabel Isabel Tier 0ArcherFrostFront ’s ultimate is one of the few things that can prolong your survival against deadly burn dot.

She can wield Red Hare Red Hare Red Hare Main Stats Item Level: 210HP: 7027Attack: 850 Unique Stats Rubber I: Attack 10%Loyalty: Additional Damage 3%HP: 30%Defense: 30%Status Effect Resistance: 10%Damage Reduction: 5% but her immunity stacks can run out near end of the fight. She uses Holy Grail Spirit (Abyss Floor 30) card but you can also use Enya Enya Enya Tier 2ArcherFireBack ’s card.

Morgan le Fay character portrait

Morgan le Fay

Morgan le Fay Morgan le Fay Morgan le Fay BrokenWizardHolyMiddle is our top dps for this fight. She uses Tiamat Tiamat Tiamat Tier 0WizardHolyBack card to get maximum damage possible.

Her mark takes 10 second to proc and if she dies before that you will lose all accumulated damage. For that reason make sure she doesn’t die before her mark procs otherwise you will lose lots of damage.

NEO Bedivere character portrait

NEO Bedivere

NEO Bedivere NEO Bedivere NEO Bedivere Tier 0ArcherHolyMiddle is our only healer for this fight. She acts as a CC dispenser and damage amplifier with her increasing crit chance for whole party.

Her root from active skill is make or break for this comp. If Cristina Cristina Cristina Tier 1WizardFireMiddle lands a single fireball on you before Galahad Galahad Galahad Tier 0KnightRadianceFront comes off cooldown, your run is likely bricked.

She uses Lilith Lilith Lilith Tier 2KnightChaosMiddle card to compensate for root resistance of Cristina Cristina Cristina Tier 1WizardFireMiddle . This reduces your reliance on RNG and gives you %95 root chance (otherwise it will be %70).

You can use Holy Grail Spirit (Abyss Floor 30) or Enya Enya Enya Tier 2ArcherFireBack ’s card to increase your damage if you don’t mind retrying when Cristina Cristina Cristina Tier 1WizardFireMiddle resists your root.

Sagittarius Sagittarius Sagittarius Main Stats Item Level: 220Ranged Attack: 1780 Unique Stats Added Target III: Basic attack number of targets increased by 3Critical Hit Chance: 20%Critical Damage: 30%Ignore Damage Reduction: 10%Boss Attack: 240 is not mandatory but recommended. Failnaught Failnaught Failnaught Main Stats Item Level: 210Ranged Attack: 1699 Unique Stats Unerring Bow: Critical Hit Chance increased 200% for 8 secondsAttack: 30%Attack Speed: 20% might mess up rotation due to increased attack speed. You can also give Red Hare Red Hare Red Hare Main Stats Item Level: 210HP: 7027Attack: 850 Unique Stats Rubber I: Attack 10%Loyalty: Additional Damage 3%HP: 30%Defense: 30%Status Effect Resistance: 10%Damage Reduction: 5% to her if you want.

Made by Sefhi sefhi