Eternal Battlelust (legendary)

Introduction

Eternal Battlelust is one of those skills that looks excessive on paper, and unusually, it largely lives up to that impression in practice. A fully stacked +100% physical damage and 20% damage reduction is not just strong—it fundamentally shifts how a march performs over the duration of a fight.

However, unlike traditional flat buffs, this skill is entirely conditional. Its value depends on how quickly and consistently you can generate stacks. That makes it less of a universal plug-in and more of a build-defining skill that requires deliberate synergy.

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How the Skill Actually Works

The key line in the description is: “Each instance of passive damage or triggered skill damage…”

This creates two important mechanical realities:

1. Stacks are Instance, Not Time-Based

Every individual damage tick counts separately. This includes:

• Passive damage (e.g. Battle Frenzy)
• Trigger skills (if they proc)

A single skill that hits multiple times can generate several stacks quickly.

2. No Internal Cooldown

Eternal Battlelust does not appear to have a hidden cooldown per stack. If you can generate rapid ticks, you can ramp very quickly.

3. Scaling Curve Matters

The skill starts at 0 stacks, so:

• Early fight = weak
• Mid fight = strong
• Late fight = overwhelming

This makes it particularly effective in:

• Longer PvP fights
• Sustain-based marches
• Tanky frontline setups that can survive long enough to scale

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Optimal Synergy: Passive vs Trigger Damage

You already pointed out the key distinction, and it’s worth reinforcing:

Passive Damage (Reliable Core)

• Battle Frenzy is one of the best enablers
• Gaze of Silence (Medusa’s Ultimate Ability)
• Consistent tick-based damage builds stacks predictably

This is what you build around. If you are running multiple legendary skills, you most likely will be able to use chaos immortals as well, this skill seems to be built specifically for Medusa! That being said, you can run it elsewhere if you do not have a maxed Medusa at the ready.

Triggered Damage (Supplemental)

• Attack & Defense
• Drastic Action

These can accelerate stacking, but:

• They are RNG-dependent
• Inconsistent early procs can delay your ramp

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Example Setup: Medusa Core

Your suggested build with good results:

• Immortal: Medusa
• Skills:
  • Battle Frenzy
  • Attack & Defense
  • Eternal Battlelust

Why This Works

• Medusa’s Gaze of Silence applies consistent passive damage instances
• Battle Frenzy adds another passive damage source
• Attack & Defense adds more damage instances, albeit as a chance trigger skill
• Combined, you get multiple stack triggers per second cycle

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Where Eternal Battlelust Performs Best

1. Physical Damage Marches

The +100% physical damage scaling is the main payoff. Magic marches don’t benefit in the same way.

2. Sustain / Mid-Length Fights

Glass cannon builds don’t use this well. You need time to stack.

3. Control + Sustain Compositions

Anything that:

• Slows fights down
• Applies ongoing sustain and mitigation

…naturally feeds the stacking mechanic.

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Availability and Cost (Wisdom Well Investment)

Eternal Battlelust is exclusively available on Legendary season servers. For anyone in seasons or Conquest, make note of this skill, consider banking Elixir in anticipation of entering legendary season, if your goal is a high-spender chaos march with Medusa.

Pricing estimates:

Legendary skills have 8 total levels. Unlocking a skill requires 60 stones. Subsequent upgrades increase in cost, with a total of 240 stones required to reach level 8.

Since each stone costs 5 Wisdom Elixir, the total Elixir requirements are straightforward. Unlocking a Legendary skill costs 300 Elixir. Fully upgrading that skill to level 8 costs 1,200 Elixir in total.

Using the same average expected drop rates from Wisdom Well (read more here), fully maxing a Legendary skill requires approximately 1,280 to 1,320 Wishes, with the midpoint sitting near 1,290.

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Conclusion Summary

Eternal Battlelust is not just strong—it’s conditional power at its extreme.

For instance, when I ran it in a Medusa-based march alongside Battle Frenzy, stacks built so quickly that by mid-fight the damage output noticeably overtook standard builds. The added 20% mitigation also made frontline units feel much harder to break.

On the other hand, when I tried fitting it into a more traditional physical burst setup without consistent passive damage, it rarely exceeded 8–10 stacks before the fight was effectively decided. In those cases, a simpler flat-damage skill performed better.

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Published: 18-03-2026