S-TIER | BUILD WARRIOR BONE CAGE SMITH OF KITAVA (@Schwingy) | SEASON 4

Build Overview

This Bone Cage Smith of Kitava build is an unconventional Warrior that bets on a rarely-used physical spell: Bone Cage. This spell summons a ring of bone around the character (or at range thanks to Astral Projection), with a base critical strike chance of 15% and the ability to immobilize enemies via the pinning ailment. Schwingy took on the challenge of turning this randomly-spun wheel build into an S-Tier capable of defeating the Uber Arbiter of Ash.

The Smith of Kitava ascendancy imposes a unique restriction: the character can only wear normal rarity armour. In return, the ascendancy nodes provide powerful bonuses such as Coal Stoker (fire resistances also apply to cold and lightning at 50%), life regeneration, and up to 15% additional maximum life. This constraint becomes an advantage since you only need to corrupt a white armour to gain extra sockets without worrying about mods.

The build’s true potential is revealed in the endgame thanks to the Cast on Minion Death setup. Skeletal Warriors die via Minion Instability, which automatically triggers an additional Bone Cage. Combined with Spell Cascade to triple the cages and Astral Projection to place them at range, the damage scaling becomes considerable. The Dark Defiler sceptre adds 5% additional chaos damage per undead — roughly 45% extra chaos damage with 9 active skeletons.

Build Strengths

• Very tanky in the campaign and early endgame: The Smith of Kitava ascendancy offers remarkable durability thanks to auto-capped resistances via Coal Stoker, life regeneration from Leather Bindings, and physical damage reduction via Molten Symbol. Schwingy notes having survived hits that would have killed his previous characters.
• Unique damage scaling via Cast on Minion Death: The COMD + Minion Instability + Diala’s Desire setup effectively doubles the number of Bone Cage casts, multiplying damage against bosses. With Spell Cascade, each cast produces 3 cages that can all hit large targets.
• Explosive clear speed with Trampletoes: The Trampletoes boots completely transform map clearing thanks to overkill explosions that chain kills. Combined with Headhunter, clear speed becomes exceptional.
• Easily capped resistances: Coal Stoker means any fire resistance also gains cold and lightning resistance at 50% efficiency. With Tantalum Alloy (+75% fire resistance), the character caps all three elemental resistances as early as level 37.
• High farming potential: The build generated several divines and valuable drops (Aziri Splendor at 170 div, Ancient Jawbone at 28 div) thanks to rarity investment and the ability to farm Aziri and high-level content.

Build Weaknesses

• Very limited AoE without Trampletoes: Bone Cage has a naturally restricted area of effect. Without the overkill explosion boots, clear speed is laborious. Schwingy admits underestimating the impact of Trampletoes and regrets not equipping them sooner.
• Bone Cage cannot hit certain bosses: The spell can only appear on solid ground. Certain bosses like Zalarath the Colossus have hitboxes at height that Bone Cage cannot reach, turning the fight into a 10-minute ordeal.
• Squishiness in the endgame despite initial durability: From tiers 10–15 onwards, the character becomes fragile and dies frequently. Transitioning to an ES + life pool is necessary, but the Destruction body armour restricted to normal rarity limits defensive options.

Gem Setup by Step

This build offers 1 progression step from leveling to the final build. Select a step to see the corresponding gem setup.

Endgame

Endgame

14 skills • 47 gems

Projection de sortilègesSpellslinger

Guerrier squelettiqueSkeletal Warrior

Levée de bouclierRaise Shield

VulnérabilitéVulnerability

Clercs squelettiquesSkeletal Cleric

OrageThunderstorm

Déclenchement lors de la mort d'une CréatureCast on Minion Death

EnchevêtrementEntangle

Lianes cinglantesThrashing Vines

Cage d'ossementsBone Cage

Reliquats de ManaMana Remnants

Projection de sortilègesSpellslinger

Guerrier squelettiqueSkeletal Warrior

Levée de bouclierRaise Shield

Recommended Equipment

• Main hand (Wand): A wand with +5 to physical spells, cast speed, spell damage, and bonus damage gained as fire/chaos. The wand crafting process followed in the video is detailed in a dedicated guide by Schwingy.
• Off-hand (Scepter): Dark Defiler — the unique scepter that grants +5% additional chaos damage per undead minion. With 9 active skeletons, that’s approximately 45% extra chaos damage.
• Weapon Swap 2: Effigy of Cruelty — a unique focus that allows critical strikes from spells to apply Critical Weakness. Druid spells (Thrashing Vines, Thunderstorm) are placed on this set to critical more often.
• Body Armor: Must be normal rarity (Smith of Kitava restriction). Use a corrupted Vaal Robe for additional sockets and the energy shield bonus. Ideally, corrupt it to gain an extra socket.
• Boots: Trampletoes for mapping (overkill explosions). For bossing, boots with high energy shield, 30% movement speed, and resistances.
• Belt: Darkness and Throne for bossing (+15% cast speed, +58% shock magnitude with runes). For mapping, Headhunter.
• Ring: Kandra’s Touch — copies the stats of the other ring. With a gold ring, this doubles the rarity bonus.
• Amulet: Prioritize +levels to spells, spell damage, cast speed, critical damage, and spirit.

Gameplay Tips

• Use Thunderstorm before spamming Bone Cage: Thunderstorm with Shock Conduction II guarantees shock on enemies, causing them to take increased damage. Always cast it first in your rotation.
• Keep two gear sets: A mapping set with Trampletoes and Headhunter for clear speed, and a bossing set with ES boots and Darkness and Throne for survivability and damage.
• Use Mana Remnants for mana sustain: Enemies killed with an elemental ailment (shock, ignite) drop mana orbs. Combined with Thunderstorm, you will always have enough mana to spam Bone Cage.
• Normal armor is an advantage: Don’t see the armor restriction as a handicap. Corrupt a white armor early for the sockets, and let the ascendancy nodes do the rest. You cap your resistances as early as level 37.
• Place your druid spells on Weapon Swap 2: With Effigy of Cruelty, your Thrashing Vines and Thunderstorm can critical and apply Critical Weakness, significantly amplifying Bone Cage damage.

The Smith of Kitava Ascendancy: a restriction that becomes an asset

Smith of Kitava is one of the most original ascendancies in Path of Exile 2. The Masterwork node imposes a strict restriction: your character can only use normal rarity armor. Gone are rare armors with powerful defensive mods, gone are iconic uniques like Brass Dome or Kaom’s Heart.

In return, you gain access to 12 ascendancy nodes that replace your armor’s mods. Coal Stoker is the most impactful: all fire resistance gained also applies to cold and lightning at 50% effectiveness. Combined with Tantalum Alloy which provides 75% fire resistance, you cap all three elemental resistances with a single ascendancy point. Leather Bindings provides comfortable life regeneration, and Kitavan Engraving offers a significant maximum life bonus.

The trick is to use a white Vaal Robe, corrupt it for an extra socket, and benefit from the base’s natural energy shield bonus. The ascendancy nodes do the work usually left to armor mods.

The Cast on Minion Death setup: the heart of the endgame build

The true potential of this build unlocks with the Cast on Minion Death (COMD) setup. The principle is simple but ruthlessly effective: your Skeletal Warriors are equipped with Minion Instability, causing them to explode when they reach a low life threshold. Each skeleton death charges the COMD buff, and when the energy reaches 100%, an additional Bone Cage is automatically cast.

Schwingy’s initial problem was that each skeleton death didn’t generate enough energy for a full cast. The solution came from two sources: Minion Pact I on the self-cast Bone Cage (which ensures the character’s maximum life is lower than the skeletons’) and Diala’s Desire, a lineage support that adds enough quality so each death generates 100% energy. The result: every cast of Bone Cage automatically triggers a second Bone Cage via COMD.

Trampletoes and Headhunter: the mapping duo

One of the major turning points of the build was the late addition of Trampletoes boots. These boots offer low movement speed, but their overkill explosion mod completely transforms the mapping experience. Every enemy killed with excess damage explodes, triggering a chain reaction that clears entire packs. Schwingy openly admits having made a mistake by not equipping these boots earlier, underestimating their impact.

Combined with a Headhunter (acquired for 22 divines in this private league), mapping becomes an explosion festival. However, these two pieces are not suited for bossing: for Citadels and Uber Arbiter, Schwingy swaps to boots with high energy shield and a Darkness and Throne belt for cast speed and shock magnitude.

The Uber Arbiter: the final quest at 25 divines per attempt

After defeating the classic Arbiter of Ash, Schwingy set himself the ambitious goal of beating the Uber Arbiter. This reinforced version requires farming three Calamity Fragments (one per Uber Citadel), each costing around 8 divines on the market — that’s 25 divines per attempt. And if you die, you face the normal Arbiter instead of the Uber.

The first two attempts ended in quick deaths against the amplified mechanics. But on the third attempt, by playing ultra-carefully and respecting every mechanic, the build proved it could defeat the hardest content in the game. A remarkable achievement for a build drawn randomly via a wheel.

Progression and budget

This build is accessible at league start. The campaign requires no particular investment, and the first maps can be farmed with very basic gear. The first real expenses come in the endgame: a wand with +3 to +5 to physical spells (15-70 exalts), the Dark Defiler scepter (a few exalts), and eventually a Diala’s Desire (22 divines for COMD consistency).

Moving into high-level bossing requires significant investment: an ideal crafted wand, an amulet with +2 to spells (65 divines), and defensive pieces with high energy shield. Including the Headhunter for mapping, Schwingy’s complete build cost approximately 100-150 divines, but the Uber Arbiter was defeated with a reasonable budget for the targeted content.

Passive Tree