S-TIER | BUILD MAGICIENNE COC COMET STORMWEAVER (@Caliathlol) | SAISON 5

Build Video

Build Overview

Caliathlol’s CoC Comet Stormweaver is the reincarnation of Comet spam via Cast on Critical, designed specifically for Path of Exile 2 season 0.5. With the massive nerfs to leech and Energy Shield recovery announced in the patch notes, many players were wondering how to keep running such a resource-hungry spellcaster. The author’s answer is radical: abandon leech and Energy Shield as healing sources entirely, and rely instead on the remnants and infusions system.

The core of the build is the unique chest The Covenant, which grants the Life Remnants skill. On every kill or hit, life orbs are generated that not only heal us but also overflow our maximum life up to 1.5 times its base value. Combined with Mana Remnants and the Stormweaver’s Storm’s Recollection ascendancy passive, the generation of life and mana orbs is doubled. An automatic healing loop then kicks in around Cast on Critical, fueled by Living Bomb and a Spell Cascade that consume infusions on every proc.

On the defensive side, the build relies on Mind over Matter and Eldritch Battery: all Energy Shield — now useless — is converted into mana, and mana becomes our true health pool while life serves solely as a resource for Cast on Critical. The result is a Comet spam build that is both absurdly powerful in damage and surprisingly tanky, able to sustain its costs indefinitely where every other spellcaster falls apart in 0.5.

Strengths / Weaknesses

Skill Gem Setup by Step

This build offers 4 progression steps from leveling to the final endgame setup. Select a step to view the corresponding skill gem setup.

Level 1-36 Level 36-64 Early Mapping Endgame

Level 1-36

7 skills • 24 gemmes

Nova de glaceIce Nova

Dards de givreFrost Darts

Bombe de givreFrost Bomb

Mur de flammesFlame Wall

Sensibilité aux élémentsElemental Weakness

Reliquats de ManaMana Remnants

Globe de givreFrostbolt

Level 36-64

9 skills • 36 gemmes

Nova de glaceIce Nova

Dards de givreFrost Darts

Bombe de givreFrost Bomb

Mur de flammesFlame Wall

Sensibilité aux élémentsElemental Weakness

Reliquats de ManaMana Remnants

Siphonnage des élémentsSiphon Elements

Tempête de feuFirestorm

Globe de givreFrostbolt

Early Mapping

10 skills • 48 gemmes

Tempête élémentaireElemental Storm

Globe de givreFrostbolt

Dards de givreFrost Darts

Sensibilité aux élémentsElemental Weakness

Reliquats de ManaMana Remnants

Siphonnage des élémentsSiphon Elements

Tempête de feuFirestorm

Tempête de glace

Déclenchement lors de CritiquesCast on Critical

Nova de glaceIce Nova

Endgame

11 skills • 49 gemmes

Tempête élémentaireElemental Storm

Globe de givreFrostbolt

Reliquats de VieLife Remnants

Cœur de glaceHeart of Ice

Tempête de glace

Tempête de feuFirestorm

Dards de givreFrost Darts

Reliquats de ManaMana Remnants

Sensibilité aux élémentsElemental Weakness

Déclenchement lors de CritiquesCast on Critical

DéchaînementUnleash

Recommended Equipment

The overall goal of the equipment is straightforward: stack as much mana, energy shield (converted to mana), and resistances as possible. Everything else is comfort.

• Body Armour (centerpiece): The Covenant, which grants Life Remnants. Before obtaining it, use a rare body armour with as much energy shield and resistances as possible.
• Helmet: mana, energy shield, resistances. Crit bonus. Reduced cost efficiency rune.
• Gloves: energy shield, resistances, critical damage bonus and increased effect of sockets. Life cost efficiency rune. Eventually, aim for Maligaro’s Virtuosity.
• Boots: mana, energy shield, resistances. Reduced freeze duration as a bonus.
• Amulet: 36+ Spirit mandatory, rarity, and anoint Cooked for 60% critical damage (the defence reduction doesn’t affect us).
• Belt: mana, energy shield, resistances. Can be replaced later with a Headhunter or a Mageblood.
• Ring 1: mana, energy shield, resistances. Maximum life and cast speed as bonuses.
• Ring 2: Snakepit, which cancels the infinite pierce of Frostbolt and gives it Fork (left socket) or chain (right socket) to explode on enemies.
• Main Weapon: sceptre with spell damage, crit chance, cast speed and gem levels. Eventually swap to a wand + a double Vaal Rathpith Globe.
• Secondary Weapon: The Whispering Ice, which grants Ice Storm — excellent against bosses as it procs Cast on Critical like crazy and applies exposure.
• Charms: immunity to stun, freeze, and slow (magic versions are sufficient).
• Flasks: with quality.
• Jewels: Sapphire Jewels for damage to start, and ideally 3 Grand Spectrum Sapphire for 54% all elemental resistances at league start. Later: From Nothing, Prism of Belief, Heart of the Well.

Gameplay Tips

• While mapping (clear) : simply spam Frostbolt. Cast on Critical barely procs on normal and magic monsters, and rares die in one or two procs.
• Against tough rares and bosses : drop Ice Storm, Firestorm and Elemental Weakness on the target, then spam Frost Darts. There is no strict rotation in the endgame.
• Firestorm with infusions — Firestorm with infusions : cast it when it lights up (triple Infusion) for maximum damage — it is one of the biggest damage and energy sources for Cast on Critical.
• During the campaign : without Cast on Critical before maps, you rely entirely on infusions for damage. The boss rotation is more demanding — follow the Mobalytics guide for each power tier.
• Comet level — Comet level Comet : if mana regeneration struggles early on, lower the level of Comet until Vigorous Remnants comfortably sustains it.
• Mana sustain : don’t worry about manually cast spells — they will never drain more mana than the remnant loop recovers.
• Frostbolt fork vs chain — Frostbolt fork vs chain : fork (Snakepit ring on the left) for better clear coverage, chain (right ring) for spam against a single target. The author prefers fork since he uses Frost Darts on bosses.

The Remnants and Infusions System

This is the technical core of the build and what makes it viable in 0.5. The Life Remnants skill (granted by The Covenant) generates life orbs when you kill or hit a target, with a short 3-second cooldown. These orbs heal you and cause your maximum life to overflow up to 1.5× its base value. Mana Remnants does exactly the same thing for mana.

Recovery is then amplified through the Arcane Remnants and Vigorous Remnants passives, which restore 3% of maximum life and mana per remnant collected. The key detail is that they also work with infusions. By socketing a low-level Living Bomb into Cast on Critical, each proc of Comet generates a fire infusion, which is immediately consumed to restart the Life Drain and mana recovery loop.

The Remnant Attraction and Empowering Remnants passives add a chance to duplicate remnants and infusions. To avoid accumulating too many unused fire infusions, socket a Spell Cascade into Cast on Critical: cascading Comet consume up to three fire infusions per proc, maximizing recovery. Thanks to the enormous pickup range, everything is collected automatically from several screens away.

Tankiness: Mind over Matter and Eldritch Battery

With Energy Shield having become unreliable in 0.5, survival relies on an indirect approach. We take Mind over Matter and Eldritch Battery, stack as much mana as possible on gear, and place a Lifetap inside Cast on Critical.

The idea: life becomes the sole resource pool for Cast on Critical, while mana serves as the primary health bar. Eldritch Battery converts all of our Energy Shield (now useless) into mana, substantially inflating this substitute health pool. There is no need to worry about other manually cast spells: they cost mana, but never more than what the remnants loop restores.

The result is counterintuitive: with roughly 4k mana and 2k base life, the build might seem fragile. But since remnants cause both pools to overflow to 1.5×, the author rarely dipped below 2.5k life and 5.5k mana, which provides a solid cushion against one-shots.

The Covenant and the Vaal Cultivation Orb Tech

The Covenant is the item that unlocks the entire build. At league start, you won’t have it right away, but it isn’t particularly rare. In the meantime, a rare chest piece with as much energy shield and resistances as possible works perfectly fine — most bosses die in a matter of seconds anyway.

Once you get the chest, it’s a massive damage boost thanks to the additional Comet hits on bosses. However, The Covenant has a mod that makes your skills cost life equal to their mana cost, which more than doubles the cost of Comet. The tech here is to use a Vaal Cultivation Orb to remove that mod, freeing the full power of Cast on Critical Cast on Critical Comet. The vow mods you get in return don’t matter much, but an increased life cost efficiency is an excellent bonus.

Stormweaver Ascendancy

While this tech could theoretically work on other ascendancies such as Oracle or Blood Mage, Stormweaver makes it completely effortless thanks to Storm’s Recollection, which doubles the generation of Life Remnants and mana.

Stormweaver also brings unique tools: Refracted Infusions grants all types of elemental infusions, and Multiplying Squalls provides +2 to the limit of all our elemental skills — a massive multiplier for Firestorm, which is devastating when cast with all three infusions. Finally, Tempest Collar, while primarily a passive node, provides small automation bonuses that increase our damage output.

Weapon Set Configuration

The build relies on a weapon swap between the main weapon (sceptre or wand) and the secondary weapon (The Whispering Ice). The Whispering Ice grants Ice Storm, an insane skill against bosses: it procs Cast on Critical Cast on Critical an enormous amount and applies exposure.

One crucial point not to overlook: you need to deselect Firestorm, Frostbolt, Frost Darts and Elemental Weakness from weapon set 2. You only want to cast Ice Storm with weapon set 2, and all other spells with weapon set 1. Once configured, the swap is automatic and you never have to think about it again.

Skill Tree