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Path of Exile 2 (PoE 2)

PoE 2 0.4 Witch Build - Cast on Critical Blood Mage

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POE2 - Cast on Critical Blood Mage.png

This is a Cast on Critical Blood Mage endgame build for Path of Exile 2 (PoE 2)'s The Last of the Druids Update. Check out the Cast on Critical Blood Mage endgame build, including its gear, socketables, skills, and playstyle!

PoE 2 Icon Attention! This endgame build starts from 65+ levels. If you want to see a build for leveling, check out our Leveling Builds!

Cast on Critical Blood Mage Build Summary

FastAF's Cast on Critical Blood Mage Build

This Cast on Critical Blood Mage build was created by FastAF by Eravin over at FastAF (Youtube). The video showcases the full potential of the build, clearing maps with ease. Check out FastAF's YouTube channel for more Path of Exile 2 content and ask questions about the build!

Cast on Critical Blood Mage Build

Build Setup
Path of Exile 2 PoE 2 Cast on Critical Blood Mage
Cast on Critical Blood Mage
Sigil of Power Icon Life Remnants Icon Frost Bomb Icon Spark Icon Frost Wall Icon Skeletal Cleric Icon Soul Offering Icon Siphon Elements Icon Elemental Weakness Icon
Diablo 4 Build - Pro Extremely High DPS

Diablo 4 Build - Pro Performs Well Against Both Mobs and Bosses

Diablo 4 Build - Pro Very Easy to Play

Diablo 4 Build - Con Maxed-Out Setup Is Extremely Expensive

This build focuses on dealing critical damage to increase DPS for all skills and trigger the Cast on Critical gem, which activates Comet casts. Thanks to Elemental Infusions, the build can deal even more damage because the most damaging spells can be infused with elements.

Date Changes
01-08-2026 Created Cast on Critical Blood Mage build for endgame.

Cast on Critical Blood Mage Equipment

Gear Modifiers
Gelid Staff IconGelid Staff
(Weapon)
・+ Level of All Spell Skills
・Incireased Critical Hit Chance for Spells
・Increased Spell Damage
・Increased Cast Speed
・Gain % of Damage as Extra Elemental Damage
Chiming Staff IconChiming Staff
(Weapon Set II)
・+ Level of All Spell Skills
Ancestral Tiara IconAncestral Tiara
(Helm)
・Elemental Resistance
・ Maximum Energy Shield
・ Maximum Life
・Increased Energy Shield
Sacrificial Regalia IconSacrificial Regalia
(Body Armor)
・% Elemental Resistance
・+ Level to All Corrupted Skill Gems
・Maximum Life
・% Increased Armor, Life and Energy Shield
・Spirit
AtziriAtziri's Acuity Moulded Mitts
(Gloves)
>・80-100% increased Armour
・% increased Critical Hit Chance
・+ To Intelligence
・Leech from Critical Hits is instant
Shamanistic Leggings IconShamanistic Leggings
(Boots)
・Movement Speed
・Maximum Life
・% Increased Armor and Energy Shield
Lunar Amulet IconLunar Amulet
(Amulet)
・+ Level of All Spell Skills
・Increased Spell Damage
・Intelligence
・Elemental Resistance
・%Increased Spell Damage While Full on Energy Shield
Seed of Cataclysm Lazuli Ring IconSeed of Cataclysm Lazuli Ring
(Ring 1)
・% increased Critical Hit Chance for Spells
・% increased Critical Spell Damage Bonus
・+% to Chaos Resistance
・10% increased Mana Cost of Skills
Seed of Cataclysm Lazuli Ring IconSeed of Cataclysm Lazuli Ring
(Ring 2)
・% increased Critical Hit Chance for Spells
・% increased Critical Spell Damage Bonus
・+% to Chaos Resistance
・10% increased Mana Cost of Skills
OlrothOlroth's Resolve Ultimate Life Flask
(Life Flask)
・Instant Recovery
・% increased Charges per use
・Excess Life Recovery added as Guard for 10 seconds

Since we will be using the Blood Magic Keystone passive, we won't need a Mana Flask for this build.

Weapons

Prioritize getting a staff that provides levels to all of your spells, followed by increased critical chance. Criticals are essential to make this build function, so use the staff with the highest roll as your budget allows.

For your second weapon set, a Chiming Staff will be used solely to be used for the Sigil of Power buff before swapping back to your main weapon.

List of Weapons

Armor and Accessories

The build utilizes Atziri's Acuity Gloves for instant life recovery from leech, as Life would also serve as our resource for casting spells. As such, it is imperative that we have multiple ways to instantly regain Life in order to have enough to be able to continuously cast spells without losing too much.

Two Seed of Cataclysm rings will be utilized for the massively increased critical chance for spells, which simultaneously boost our damage and survivability.

List of Armors List of Accessories

Runes and Soul Cores

Equipment Sockets
Weapon
Armor

Saqwal's Rune of the Sky will be utilized to increase all of the Elemental Damage dealt. For the other socket, a Greater Glacial Rune will be used, as Comet procs will be the most damaging skill in this kit.

For our armor sockets, we will be using any of the Elemental Runes to cap out our resistances. Since we will be focusing on other modifiers on our armor pieces, we can use elemental runes to reach the resistance cap.

List of Runes List of Soul Cores

Belts and Charms

Belt Modifiers
Headhunter Heavy Belt IconHeadhunter Heavy Belt ・Charm Slots
・% Increased Stun Threshold
・Maximum Life
・+ To Strength
・+To Dexterity
・When you Kill a Rare monster, you gain its Modifiers for 20 seconds
Charm Options
The Fall of the Axe Silver Charm ImageThe Fall of the Axe Silver Charm Nascent Hope Thawing Charm ImageNascent Hope Thawing Charm Rite of Passage Golden Charm ImageRite of Passage Golden Charm

We will be utilizing the Headhunter Heavy Belt for more life and stun threshold, as well as gaining rare monster modifiers when they are slain.

For our charms, we will be using The Fall of the Axe Silver Charm, Nascent Hope Thawing Charm, as well as the Rite of Passage Golden Charm. The first two of these charms will be used to prevent our mobility from being hindered, while the last charm will be utilized for increased loot rarity and for the offensive buff.

List of Belts List of Charms

Cast on Critical Blood Mage Skills

All Active and Persistent Skills

Skill Support Gems
Sigil of Power IconSigil of Power
Life Remnants IconLife Remnants
Cast on Critical IconCast on Critical
Frost Bomb IconFrost Bomb
Soul Offering IconSoul Offering
Elemental Weakness IconElemental Weakness
Spark IconSpark
Skeletal Cleric IconSkeletal Cleric
Siphon Elements IconSiphon Elements

We will be using Spark to generate Infusions as well as Critical Damage Triggers, so we are getting Pierce and Projectile Acceleration to hit as many targets as possible in the shortest amount of time.

As most skills will rely on multiple infusions, we will be getting Harmonic Remnants to pick them up from further away, making runs more seamless as we do not have to get too close to slain enemies to pick up remnants.

List of Skills

Cast on Critical Blood Mage Passive Tree

Passive Tree Progression

Ascendency Passive Nodes
Sunder the Flesh, Vitality Siphon and Crimson Power
Passive Nodes
Screenshots and Footage taken from Path of Building

※ Legend: Red = Weapon Set I Green = Weapon Set 2

The build revolves around elemental spells to deal damage in conjunction with criticals, so we will be taking nodes such as Glaciation, Evocational Practitioner, and Exposed to the Storm.

A key thing to note is that we will be getting Blood Magic, which uses Life as a resource in place of mana in order to cast spells. This makes the build reliant on Life as a resource, so we will be taking the Ascendancy passives, such as Vitality Siphon, Grasping Wounds, and Crimson Power, in order to increase life and sustain.

Passive Skill Tree Guide and List of Passives

Jewels

Note: The modifiers listed are arranged according to priority.

Sapphire Jewel Sapphire ・Incrased Magnitude of Damaging Ailments You Inflict With Critical Hits
・Increased Magnitude of Ailments You Inflict
・Triggered Spells deal increased % Damage
・Cast Speed
・Spell Damage
・Critical Damage Bonus

While we do not utilize any expensive, unique gems, we will be getting a total of seven Sapphires with modifiers that directly benefit our build. While it may be expensive to get all seven sapphires with the exact rolls that we want, it's well worth the cost as it increases our damage a lot.

List of Jewels

Cast on Critical Blood Mage Playstyle and Skill Rotation

Mobbing Rotation

Our mobbing rotation is fairly simple, as it only requires us to cast Spark to clear maps. The Spark projectiles travel fast and deal good DPS, while occasionally triggering comets, which is more than enough for normal mobs. The rotation is as follows:

  1. Cast Spark to trigger Comet casts.
  2. Rinse and Repeat.

Bossing Rotation

For bosses, we will be utilizing the entirety of our kit and use buffs and debuffs to quickly burst bosses or tanky elites down. The rotation is as follows:

  1. Cast Sigil of Power for the buff.
  2. Cast Frost Bomb to lower target elemental resistance.
  3. Cast Elemental Weakness to further lower elemental resistance.
  4. Cast Frost Wall to where the target is preparation for your next spell.
  5. Cast Spark to deal damage to your target, triggering Comet casts on critical and causing your Frost Walls to explode.

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