The Infernalist Demon Form Arc Cast on Crit (CoC) build stands as one of Path of Exile 2’s most flexible and high-output endgame setups. It combines the POE 2 Currency transformative power of Infernalist’s Demon Form ascendancy with Arc’s chain lightning AoE damage. This pairing delivers exceptional map clearing speed and reliable single-target boss damage for casual and hardcore players alike.

Unlike rigid meta builds, this setup balances offensive burst and sustainable defense. It leverages Demonflame stacking mechanics and CoC automation to minimize manual skill inputs, creating a smooth and efficient combat loop throughout all game content.

Core Build Mechanics

At its core, this build relies on Demonic Possession, the key Infernalist ascendancy node that unlocks permanent Demon Form. Each stack of Demonflame grants extra spell damage, steadily boosting Arc’s base output during combat encounters.

Arc serves as the primary triggered spell. Thanks to Cast on Crit support gems, Arc automatically activates upon critical strikes from secondary attack skills. This automated trigger system eliminates frequent manual casting and streamlines crowd clearing.

Demon Form applies continuous life degeneration, which acts as a double-edged mechanic. While it drains player health over time, it maximizes Demonflame stacks to amplify spell power, defining the build’s high-risk, high-reward combat identity.

Key Defensive Synergy

Sustaining Demon Form’s passive life drain is critical for build survival. Players prioritize life recoup, elemental resistances, and consistent life regeneration on gear and passive trees.

Special unique armors like Sacrosanctum turn damage recoup into both life and energy shield recovery. This mechanic perfectly offsets Demon Form’s degeneration, letting players maintain maximum Demonflame stacks permanently without frequent deaths.

Additional ascendancy nodes including Pyromantic Pact and Altered Flesh further boost damage recoup and elemental damage mitigation. These passives stabilize defenses during dense mob fights and tough boss encounters.

Gameplay and Combat Performance

In general mapping content, chained Arc lightning bounces across entire screens, clearing hordes of enemies in seconds. Automated CoC triggers ensure consistent damage output with minimal button presses, greatly reducing player fatigue.

For endgame bosses, stacked Demonflame buffs scale Arc’s single-target damage sharply. Combined with critical strike multiplier bonuses, the build melts high-health elite enemies and endgame raid bosses efficiently.

The build also retains solid mobility. Players can reposition freely while maintaining Demon Form and continuous Arc triggers, avoiding enemy mechanics while sustaining damage pressure.

Build Pros and Final Verdict

The Infernalist Arc CoC Demon Form build features fantastic AoE clearing, scalable boss damage, and effortless gameplay. Its only downside is strict gear requirements for sustainable defense.

Overall, it remains a cheap POE 2 Currency top-tier endgame build in PoE 2. It perfectly showcases the Infernalist class’s unique transformation mechanics while delivering stable, high-performance combat for all endgame content.