Best Osh Raid Teams in Hero Wars: Alliance Adventure: Alliance Adventure

Defeating the Asgard raid boss Osh in Hero Wars: Alliance Adventure: Alliance Adventure requires building around specific boss mechanics: surviving heavy magic area-of-effect bursts, bypassing massive armor values, and delivering high single-target damage. The top setups rely on three primary damage engines—Cornelius, Jhu paired with Mojo, or Lara Croft—anchored by defensive and penetration support from Isaac.

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Core Osh Raid Lineups

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Cornelius Heavy Wisdom Burst Setup

Cornelius functions as a top-end burst carry against high-difficulty Osh because his primary skill, Heavy Wisdom, drops a monolith that scales its damage directly against the target's Magic Attack. Because Osh possesses exceptionally high offensive magic stats, this skill inflicts massive burst damage without requiring Cornelius to rely solely on his own baseline physical or magical attack stats.

To keep Cornelius alive and maximize his impact:

• Field Isaac: Absorbs Osh’s magic volleys, shields the team, and grants Armor Penetration via his artifact weapon.
• Add Sebastian: Cleanses incoming debuffs and increases critical hit utility.
• Include Martha: Keeps the formation stable with her Tea Party healing totem and team-wide speed acceleration.

Execution Requirement: You must run this team manually. Triggering Heavy Wisdom on auto-combat risks wasting the monolith while Osh has protective barriers active or before support buffs trigger. Hold Cornelius’s ultimate until boss shields drop and team buffs are fully active.

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Jhu and Mojo Percentage Damage Strategy

For an accessible lineup that succeeds on auto-battle across all difficulty tiers, pair Jhu with Mojo:

• Jhu: Uses You Will Not Stop Me to deal pure damage based on a percentage of Osh's current health pool. This produces massive damage figures early in the encounter when the boss's health bar is full.
• Mojo: Places a passive Hex mark on the boss. Hex periodically deals secondary magic damage calculated from the cumulative damage Osh received during the preceding interval, multiplying Jhu’s pure damage output.

Because Jhu scales from current health rather than maximum health, his damage output naturally tapers off toward the end of the fight as Osh's remaining health drops. However, its consistency and lack of manual micro-management make it the most reliable baseline composition for daily guild raid attempts.

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Lara Croft Physical Penetration Composition

Lara Croft operates as a sustained physical damage carry. Unlike Jhu, her damage output remains flat and consistent across the entire fight duration rather than declining as the boss's health pool shrinks.

To maximize Lara Croft's output:

1. Stack Armor Penetration: Osh possesses high natural armor. Time Isaac’s weapon artifact activations alongside Lara Croft's multi-hit ultimate attacks to ensure her strikes pierce the boss's defense.
2. Buff Critical Strike Stats: Pair her with Sebastian, whose buffs provide the necessary Critical Hit chance and bonus pure damage to amplify her rapid-fire hits.
3. Sustain Backline Survival: Rely on Isaac's shields and Martha's haste to prevent backline sweeps and increase attack frequency.

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Isaac: The Essential Osh Support

Regardless of your primary damage carry, Isaac is the central defensive engine for high-tier Osh encounters:

• High-Voltage Module: Absorbs Osh's regular magic attacks and converts that incoming damage into energy charges.
• Shielding and Survival: Uses absorbed energy to generate protective barriers that prevent Osh's magic bursts from wiping squishy backline heroes in the opening seconds.
• Artifact Armor Penetration: Triggers massive team-wide Armor Penetration buffs on his ultimate, allowing physical damage dealers to pierce Osh’s high armor values.

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Choosing Your Next Action

To select and build the right lineup for your current guild raid targets:

1. Choose Jhu and Mojo if you want a low-stress auto-battle lineup that achieves reliable scores across any tier without manual skill timing.
2. Choose Cornelius if you are tackling high-tier Osh encounters and are prepared to play manually to time Heavy Wisdom windows between boss shields.
3. Choose Lara Croft if you have already invested heavily in physical armor penetration stats and need sustained, consistent damage through the final phases of the fight.
4. Prioritize Isaac's survivability and weapon artifact first, as every physical Osh strategy relies on his energy absorption and armor penetration buffs to remain effective.