This Otherworld Exploration game mode offers three Elemental Domains, each with five levels of difficulty. The bosses’ skills in each domain replicate those of some Legendary heroes. These bosses are also immune to all control effects, while enemies in these stages take 50% more DMG from two specified elements. In Elemental Domain - Ice, all enemies take 50% more DMG from Fire and Radiant attacks. The enemies can deal high AOE DMG, making the Elemental Domain one of the more challenging in Otherworld Exploration. For players with less-developed teams, it will test their strategic positioning and enemy kill sequence. This article will focus on lineups consisting of rare and epic heroes that are easily accessible, offering suggestions that aim to help players complete the in-game content at Difficulty 5. Meanwhile, we'll give some examples of excellent lineups that can complete auto-combat with ease.
Elemental Domain - Ice
I. About The Boss

II. Stage Clearing Configuration
[Recommended Level and Equipment]● Recommended Level It is recommended that you try this when the overall level of your team reaches 90. ● Equipment Requirements You should aim to have fully refined (+20) equipment for all allied heroes. It is highly recommended that you equip mythic equipment, such as Massif Colossus, Precisive Carnage Gauntlets, and Moonlight Mantle, that have the right attributes for this stage if you have them.
[Key Attribute Recommendations]1. Ideally, the average HP of your heroes should be over 35,000. 2. It is recommended to have two tank-type heroes on the frontline absorbing DMG. The tanks should have over 70,000 HP and 2,500 DEF. If the tank's HP is sufficiently high, the DEF requirement can be slightly reduced. For every 10,000 HP above the recommended HP level, DEF can be decreased by 500, but it is advised not to go below 1,500 DEF. 3. Heroes responsible for applying debuffs should have more than 320 Accuracy.
II. Recommended Lineups
Aura:
Lineup: Horrus+Garius+Gumm+Careth+Theohein Positioning Example:

Analysis: Position your heroes in the backline to avoid enemy AOE DMG as much as possible, as shown in the diagram. In the third round of the challenge, make sure that at least one minion is killed before the enemy releases their ultimate skill, hence Khrysos should be positioned as shown in the image to deplete minion HP with his ultimate skill. Recommended Legendary Heroes:

Rally:
Lineup: Brody+Garius+Gumm+Hegio+Tathlyn Positioning Example:

Analysis: Position your heroes in the backline to avoid enemy AOE DMG as much as possible, as shown in the diagram. Recommended Legendary Heroes:

Burn:
Lineup: Aschetius+Durem+Karf+Khrysos+Acilia Positioning Example:

Analysis: Since the Burn School lacks Rare and Epic DPS heroes capable of instantly killing backline enemies, this build is only recommended to those who have a complete set of Legendary heroes of this faction. While Karf inflicts Burn status on enemies, Durem depletes enemy HP and provides Attack Up and Crit Damage Up buffs to allies in the same School with his ultimate skill, thereby helping Aschetius quickly eliminate all enemies on screen with his ultimate skill.
Wild:
Lineup: Horrus+Garius+Gumm+Tonalnan+Caraman Positioning Example:

Analysis: Position your DPS heroes to avoid the bulk of the enemy’s DMG, as shown in the diagram. Use Tonalnan and Caraman together to eliminate 1-2 enemies before the enemy releases their ultimate skill to lessen enemy damage. Recommended Legendary Heroes:

III. Examples
*In this example, we use a Rally-based team lineup.

● Team Aura Here, Garius's DEF Aura is used to allow for more mistakes and to lower the requirement for well-developed heroes. ● Equipment
Note: Stack Attack Speed on Tathlyn to ensure that he can use his passive skill at the right time to provide the Rally status to Hegio.

● Food Improvement The less-developed teams will struggle both in survival and damage output. Since Radiant Damage is the main form of damage in this lineup, the use of [Radiant Steamed Starfish] is recommended. Radiant Steamed Starfish can be directly purchased from Rothe the Drunkard at the open-air tavern in Lacunae, Aethercairn. It provides a +10% HP and +5% Radiant Damage buff for 600 seconds. ● Stage Clearing Tips 1. Gumm's ultimate skill deals damage to all enemies three times, making it a skill that can easily trigger the Witch's Remains. It is recommended to first use Gumm's ultimate skill to trigger the Witch's Remains, which applies a Defense Penalty to all enemies, increasing the damage dealt by DPS heroes. 2. In the first two rounds of the challenge, adjust the coverage of Hegio's ultimate skill to leave behind a weak enemy, so you can ensure all ultimate skills are ready for use before entering the next round of challenge; 3. Use Garius's ultimate skill as an emergency measure when you are about to lose allies; 4. First, use Gumm’s ultimate skill to trigger the Witch's Remains artifact effect to apply Defense Penalty to enemies. Next, use Tathlyn’s ultimate skill to deplete enemy HP and provide an Attack Up status to Hegio. Finally, use Hegio’s ultimate skill to deal substantial AOE burst damage; 5. In the third round of the challenge, eliminate at least one minion before the enemies use their ultimate skills. Otherwise, the boss and its two minions will release their ultimate skills together and could instantly kill even a frontline tank that has adequate survival attributes; 6. Since the boss's second skill generates a smaller shield, if you are having trouble surviving, replace Brody with stronger tank heroes like Horrus or Isolde that can protect their allies. Note that Isolde's ultimate skill should be used after the boss releases its first skill, or else the boss will steal Isolde’s shield; 7. Consider using Control Skills as an emergency measure to provide an AOE Shield to prevent allies from dying.
IV. Auto-Combat Examples
*Advanced lineups of the Aura, Rally, and Burn factions can more easily clear stages while in auto-combat. This section will demonstrate the newly added Aura faction for this season.

[Recommended Lineup]
Lineup: Aemonleyda+Diantha+Rose+Khrysos+Acilia Positioning Reference:

● Team Aura Here, use the Attack Aura of either Daphne or Fathomdown, which can increase the ATK of all your heroes by 45% in this stage. ● Sample Lineup This lineup is built around the Aura archetype heroes introduced in Season 3, characterized by high AOE DMG output and low development difficulty, making it a premium choice for quick auto-combat clears for this stage. As frontline heroes, Khrysos and Acilia not only help the team absorb the bulk of enemy damage but can also dispel shields and provide immunity to debuffs, effectively countering the skill mechanics of enemies in this stage. Khrysos' ultimate skill provides shields to all allies and applies an Attack Penalty to all enemies, allowing for better damage output for your DPS heroes. Acilia provides continuous AOE healing for the team and can counter various enemy debuffs through dispelling and providing immunity to debuffs. Rose's ultimate skill deals damage multiple times, allowing her to trigger Witch's Remains to apply a Defense Penalty to enemies. She also has skills for dispelling debuffs, applying Attack Penalty to enemies, and healing teammates, making her a premium-quality support hero that fits well with the team. Diantha's skills can help Aemonleyda gain Aura Energy. She can also inflict Blooming state on enemies with her ultimate skill, increasing the damage enemies receive from Aura archetype heroes. Aemonleyda's passive skill provides a powerful buff where her attacks are guaranteed to trigger critical hits, allowing her to deal high AOE DMG. ● Skill Timing Alternate the use of Rose’s and Khrysos' ultimate skills to keep enemy targets in the Attack Penalty state for as long as possible, thereby increasing the room for error in auto-combat. To maximize damage output, releasing ultimate skills in the order of Rose—Diantha—Aemonleyda will deal the highest AOE DMG. Travelers can adjust this strategy based on their heroes' Skill Level and Skill Haste, as shown in the diagram below.

[Team Lineup Recommendations]
● Recommended Level The overall level of your team should be about 90. Heroes responsible for applying debuffs need to be over Lv. 90 and equipped with Negative Runes with an Accuracy main stat, which will make it easier to stack the Accuracy attribute. ● Key Attributes Khrysos and Acilia HP >80000, DEF >1500; All of the deployed heroes should have over 30,000 HP. Khrysos, Rose, and Diantha Accuracy >320; ● Equipment Example: Note: Diantha needs to stack Accuracy and Skill Haste to ensure that she releases her ultimate skill before Aemonleyda. This will allow Diantha to inflict Blooming state on enemies, which increases the damage dealt by Aemonleyda's ultimate skill.
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