Home / Build / [3.13 PoE Build] Cast on Crit Spark Shadow (Assassin)

[3.13 PoE Build] Cast on Crit Spark Shadow (Assassin)

Intro & build description

This build specializes in clearing maps quickly. Gameplay, as with all cast on crit builds, is very satisfying and engaging due to the fast-paced playstyle. I would not recommend starting this build in a new league as a first character if you are a new player, but with some adjustments to the tree, it definitely can be done.

Build Pros

  • Fun
  • Fast-paced gameplay
  • High damage/clear speed

Build Cons

  • Wound not suggest as a league starter for new players

Passive tree(s) and Path of Building

[3.13] Full Build
PoB link


Bandits Quest Choice
Kill all bandits

Ascendancy skill points

LabyrinthsSkill point choice
Labyrinth 1Unstable Infusion
Labyrinth 2Deadly Infusion
Labyrinth 3Opportunistic
Endgame LabyrinthMistwalker

Skill gem setup



Flesh and Stone



Body Armor


Added Lightning Damage Support

Lightning Penetration

Cast on Critical Strike Support


Inspiration Support


Cast When Damage Taken Support

Blade Vortex

Blade Blast

Tempest Shield


Flame Dash

Arcane Surge


Faster Casting Support

2h Weapon


1h Weapon


Vaal Righteous Fire


Offhand weapon / shield

Cast When Damage Taken Support

Wave of Conviction


Build uniques / Example rare gear

Tip: Click on the item to view it on PoE Wiki or to view similar rare items in poe.trade


Rare Hubris Circlet

Rare Hubris Circlet with high ES and elemental resistances.

Body Armour

Rare Vaal Regalia

Crusader influenced chest with the explosion mod. This mod can be expensive but it is worth it. Get it once you can afford it. Until then, use rare chest with high ES and elemental resistances.


Algor Mortis

Use rare gloves with elemental resistances and high ES till you get your hands on Algor Mortis.


Rare Boots

Rare boots with high movement speed, elemental resistances and Tailwind.

Left Ring

Rare Ring

Rare ring with high elemental resistances and necessary stats you are lacking as well as flat energy shield.

Right Ring

Rare Ring

Rare ring with high elemental resistances and necessary stats you are lacking as well as flat energy shield.


Rare Amulet

Rare amulet with increased % maximum energy shield, critical strike multiplier and elemental resistances.


Rare Stygian Vise

Rare stygian vise or crystal belt with flat energy shield and resistances. Any additive mods are just bonus.

1Hand Weapon

Rare Sceptre/Dagger

Weapon with spell or lightning damage, critical strike chance for spells and flat lightning damage to spells. Combining all of the mods with high values in one item can be expensive.


The most important mod on the weapon, however, is ”Hits can’t be evaded” to make sure we proc as much as we can.


Rare Shield

Rare ES based shield with high ES, spell or lightning damage and critical strike chance for spells. Any resistances on the shield are bonus.


Thread of Hope

Thread of Hope with a large radius is socketed next to ”Instability” notable.  It allows us to grab Deep Wisdom, Arcane Focus, Utmost Intellect and Light Eater.


Transcendent Flesh

Jewel is socketed next to ”Faith and Steel” notable.



Great Jewel all around. Look for Veteran Defender, Unwavering Focus, Aerodynamics notable mods.


Hazardous Research

Hazardous Research is great jewel pretty much for any spark build.


Flask Setup

  1. Rumi’s Concoction
  2. Bottled Faith
  3. Cinderswallow Urn
  4. Ample Diamond Flask of Warding
  5. Ample Quicksilver Flask of Adrenaline

Feel free to share your thoughts/experiences/tips about the build in comments section below.

About prime

Prime is knowledgeable in everything builds related. Mostly focuses on writing build guides and tutorials on how to play with certain skills.

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