Corrosive Power

Introduction

Corrosive Power is one of the most expensive epic skills available in Infinity Kingdom, and that alone makes it a skill many players hesitate to invest in. The appeal is easy to understand: extra energy, stronger ultimate skills, and the potential to significantly increase damage output over the course of a battle.

The real question is whether those benefits justify the cost. While Corrosive Power can produce impressive results in the right setup, its value depends heavily on an Immortal’s ability to cycle ultimates consistently and take advantage of the buff window after activation.

This guide explains exactly how the skill works, which Immortals benefit most, where it fits in modern builds, and whether it deserves a place in your long-term progression plans.

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How Corrosive Power Works

Corrosive Power is an Epic Passive Skill, meaning it remains active throughout the entire battle once equipped.

The skill activates after the Immortal has dealt direct damage with an ultimate skill three times. Once triggered, Corrosive Power provides two effects:

• Restores Energy
• Increases Ultimate Skill Damage for 9 seconds

At Skill Level 1:

• Restores 60 Energy
• Increases Ultimate Skill Damage by 18%

At Skill Level 8:

• Restores 200 Energy
• Increases Ultimate Skill Damage by 60%

The activation condition never changes as the skill levels up. Only the amount of energy restored and the damage bonus increase.

One important detail is that only direct ultimate damage contributes toward activation. Damage-over-time effects do not count toward the three-hit requirement.

Because of this, Corrosive Power performs best on Immortals whose ultimate skills deal direct damage in AoE (3 instance requirement) consistently throughout the fight.

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Why the Skill Is Strong

Corrosive Power effectively combines two valuable mechanics into a single skill slot.

The first is energy acceleration. Receiving 200 energy after activation helps an Immortal reach their next ultimate sooner, improving overall skill rotation and pressure.

The second is burst amplification. A 60% increase to ultimate damage can dramatically increase the impact of subsequent casts, especially on Immortals whose ultimates already represent a large percentage of their total damage output.

In longer fights, these two effects begin feeding into each other. More energy leads to more ultimates, while stronger ultimates create larger damage spikes whenever the buff is active.

This scaling effect is what makes Corrosive Power particularly attractive in extended PvP battles and boss encounters.

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Investment Cost

Corrosive Power is considered a premium Epic Skill.

To unlock it, players must acquire:

• 60 Ability Stones
• 300 Elixir total

Unlike many premium Epic Skills obtained through Kingdom versus Kingdom rewards, Corrosive Power uses Elixir rather than traditional KVK Ability Stones.

After unlocking the skill, upgrades require Soul Crystals.

To fully max Corrosive Power from Level 1 to Level 8, the total cost reaches:

• 60 Ability Stones
• 143,400 Soul Crystals

This makes it one of the more expensive skill investments in the game, which is why prioritization matters.

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Best Immortals for Corrosive Power

The game recommends the skill for Attack, Ranged, and Magic Immortals, and in practice that recommendation is largely accurate.

The strongest users tend to share three characteristics:

• High ultimate damage
• Atleast 3 damage instances per ultimate cast
• Reliable ultimate uptime
• Good energy generation

Loki

Loki is one of the most natural fits.

His ultimate already deals substantial area magical damage, and players running his Exclusive Artifact will see even greater value from stronger repeated casts. Corrosive Power helps amplify his strongest damage source while improving ultimate frequency throughout longer engagements.

Khan

Khan benefits for similar reasons.

His ultimate delivers powerful team-wide physical damage, and Corrosive Power increases both the frequency and impact of those casts. The skill fits naturally into builds focused on sustained offensive pressure.

Hippolyta

Among current options, Hippolyta may be one of the most interesting users.

Her kit naturally supports strong energy generation, allowing her to take greater advantage of the energy refund than many other Immortals. Since she already relies on frequent skill usage to maintain pressure, Corrosive Power complements her playstyle exceptionally well.

The skill is especially noticeable in longer PvE encounters where maintaining ultimate tempo becomes increasingly valuable.

Other Viable Users

Many backline damage dealers can use Corrosive Power effectively if their build revolves around repeated ultimate casts.

The key consideration is not the Immortal’s class but whether they can reliably reach additional ultimates during the nine-second buff window.

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Skill Pairings

Corrosive Power performs best when paired with skills that either accelerate energy generation or increase the value of repeated ultimate casts.

Energy Mastery

This is the most common pairing. Both skills focus on energy generation and ultimate enhancement, creating extremely strong ultimate cycling. Together they can dramatically increase the number of ultimates cast during a fight.

Psionic Tide

A strong option for magical damage dealers. Psionic Tide contributes additional energy generation while supporting sustained magical damage output. The combination creates a smooth cycle of repeated ultimates and increasing pressure.

Battle Stance

A more specialized choice. After the twenty-second mark, Battle Stance provides increased damage and faster energy recovery. In battles that regularly reach the later stages, the combination can become very powerful.

The drawback is sacrificing early-fight value.

Time to Shine

A solid choice for physical damage dealers. The additional critical rate and physical damage improve the effectiveness of ultimate casts during Corrosive Power’s damage window and increase overall burst consistency.

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Corrosive Power vs Energy Mastery

This comparison is important because both skills compete for similar resources.

Corrosive Power is undeniably powerful, but Energy Mastery remains the more universally valuable investment for most accounts. Energy Mastery tends to provide stronger overall consistency and broader applicability across ultimate-focused builds. Because both skills require a significant investment, many experienced players choose to unlock and upgrade Energy Mastery first.

That does not make Corrosive Power a poor choice and Corrosive Power offer more versatility in the sense that you can equip it on e.g. a Saladin or Hippolyta in your frontline whereas Mastery is locked. Moreover, most players that build into either of these skills want to make use of both in synergy with oneanother. For players who already have Energy Mastery built, Corrosive Power becomes a much more attractive second investment.

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How to Obtain Corrosive Power

There are currently two primary ways to acquire the skill.

Elixir Purchase

The standard method is obtaining the required Ability Stones through the premium Elixir system.

Players need 60 Ability Stones to unlock the skill.

1,000-Day Login Reward

Players who reach 1,000 consecutive logins may receive a special reward selection that can include:

• A Skin
• An Epic Immortal
• An Epic Skill

Many long-term players choose Corrosive Power from this reward pool due to its rarity and high value.

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Conclusion Summary

Corrosive Power is a powerful A-Tier Epic Skill that rewards builds focused on repeated ultimate usage.

Its combination of energy restoration and ultimate damage amplification can significantly increase overall damage output, particularly in longer battles where multiple activation cycles occur. The skill works best on Immortals capable of maintaining strong energy tempo and consistently casting ultimates throughout the fight.

The main drawback is its cost. Because Energy Mastery generally provides broader value for a similar investment, most players should prioritize Energy Mastery first.

Once that foundation is established, however, Corrosive Power becomes one of the strongest premium Epic Skills available and a worthwhile addition to any ultimate-focused roster.

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Published: 05-06-2026