C4SH is the newest Vault Hunter in Borderlands 4, arriving with the Mad Ellie and the Vault of the Damned expansion. A sentient CasinoBot who now wanders Kairos wielding cursed eldritch relics, his entire kit revolves around one concept: luck. Every Action Skill, every passive, every Augment feeds back into a Fortune stack economy that can either supercharge your damage or leave you gambling on a reload. He's also the first Vault Hunter in the game with no Capstone skills, replaced instead by an extra Augment slot through Devil's Tines.
What makes C4SH different from other Vault Hunters?
According to the official Gearbox spotlight published on borderlands.2k.com, C4SH's class trait is Windfall. Killing enemies generates Fortune stacks, and every time you empty a magazine or activate an Action Skill, there's a chance to trigger Windfall. When Windfall fires, it consumes all Fortune stacks and converts them into boosted Skill Damage, Gun Damage, and upgraded Action Skill behavior for its duration. Fortune Skills also treat C4SH as if he's at maximum Fortune stacks while Windfall is active.
The practical result: C4SH rewards aggressive play. The more enemies you kill and the more often you drain magazines, the more frequently Windfall procs. Sitting back and sniping slowly starves the engine.
All three Action Skills explained
C4SH has three Action Skills to choose from, each playing a distinct role.
Cross-Fire
Cross-Fire swaps C4SH into a third-person perspective where he dual-wields revolvers, similar to how Rafa uses Arc-Knives according to Sportskeeda's skill tree breakdown. While active, holding Fire triggers Burst Fire (which drains duration faster), holding Aim locks onto a target, and pressing Melee launches a knockback attack that pushes both C4SH and the enemy apart. During Windfall, Cross-Fire shots have a chance to ricochet.
Sleight of Hand
Sleight of Hand has C4SH draw cards and throw them as magical projectiles. The base deck includes Fireball (creates a Fire Nova on detonation, spawns a Fire Mortar Rupture during Windfall) and Magic Missile (splits into homing Kinetic projectiles, doubles its split count during Windfall). Adding Augments puts more card types into the deck, but each addition makes draws more random. That tradeoff is worth understanding before stacking every card Augment available.
Cleromancy
Cleromancy rolls supernatural Bone Dice to summon a Bone Totem whose type depends on what number comes up. Base rolls produce a Mortar Totem on 4's (lobs Fire Ordnance in a large radius) or an Angry Totem on 10's (grants C4SH increased Gun Damage over time). During Windfall, dice rolls always produce a unique result. Augments add more possible Totem types tied to specific roll numbers.
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Cleromancy's Bone Totems interact with a huge portion of C4SH's passive tree. If you plan to invest heavily in Roll the Bones, Cleromancy is almost always the right Action Skill choice.
Cleromancy Bone Totem spawn
Roll the Bones skill tree (green tree) overview
This tree focuses on Bone Totems, Windfall uptime, and the Jinx debuff mechanic. Key highlights by row:
Row 1:Luck Be a Robot scales Action Skill Cooldown Rate with Fortune stacks. Sweet Roll gives Max Health and restores health when a Totem spawns, with overflow becoming Overshield. Charm Bracelet scales Skill Damage with the number of active Totems.
Row 3:Before She Knows You're Dead increases Movement Speed per active Totem and then converts that speed into bonus Skill Damage. Luckless Jinxes nearby enemies whenever C4SH uses an Action Skill, making them take more damage and deal less.
Row 4:Can't Stop Winning gives a chance to Critically Hit with Guns and Action Skills, and Critical Hits themselves have a chance to trigger Windfall. Accursed Bones Jinxes any enemy C4SH hits with an Action Skill and adds Lifesteal against Jinxed targets. Mighty Nine provides a safety net: if C4SH would go into Fight For Your Life while a Bone Totem is active, he instead gets a free Second Wind, a free Cleromancy Charge, and sacrifices one Totem.
Row 6:Snake Eyes fires Bone Shards at all Jinxed enemies whenever C4SH shoots one, and those Bone Shards create Bone Splinters that deal Kinetic Damage and increase all damage taken by hit enemies. Call makes C4SH and his Totems automatically Critically Hit Jinxed enemies whenever he activates an Action Skill.
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The Jinx synergy in Roll the Bones only pays off if you're consistently applying it. Luckless and Accursed Bones together cover most scenarios, but if you skip one, the chain breaks down fast.
Roll the Bones tree layout
Luck of the Draw skill tree (blue tree) overview
This tree amplifies Fortune stack generation, Sleight of Hand charges, and elemental damage output. Several of the most powerful Fortune Skills live here.
Row 1:Insurance builds Shield Capacity and grants a Fortune stack every time the Shield fully recharges. Alchemy increases Elemental Effect Chance and gives a Fortune stack on each elemental application.
Row 4:Ace in the Hole adds Gun Damage for every Fortune stack held. High Roller scales Gun Damage with Action Skill Cooldown, rewarding builds that stack cooldown reduction. Payout increases the bonuses of all Fortune Skills.
Row 5:House Edge means entering Windfall only consumes half the Fortune stacks instead of all of them, which is a significant efficiency gain for builds that want to maintain stack counts. C4SH Game sets a minimum Fortune stack floor for all Fortune Skills. Boom or Bust spawns free Grenades on nearby enemies equal to the Fortune stacks consumed when Windfall triggers.
Row 6:Hot Streak makes the next attack after gaining a Fortune stack an automatic Critical Hit with bonus Crit Damage. Ante Up scales both Gun Damage and Skill Damage with magazine fullness and Fortune stacks simultaneously. No Limit increases the maximum Fortune stack cap but reduces the chance each stack has to trigger Windfall.
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House Edge and C4SH Game together form the backbone of Fortune-sustained builds. House Edge keeps stacks alive through Windfall, while C4SH Game ensures Fortune Skills never bottom out between kills.
Chaos Walking skill tree (red tree) overview
Chaos Walking is the aggression tree, built around Cross-Fire, Fire Rate, movement, and Kinetic/Incendiary damage conversion. It rewards players who stay mobile and keep shooting.
Row 1:Unleashed increases Fire Rate with Guns and Action Skills. The Determinator provides Health Regeneration that scales with movement speed.
Row 3:Hot Hand deals Bonus Incendiary Damage that scales with Fire Rate. A Blur of Fingers and Brass stacks Reload Speed and Fire Rate bonuses every time a Fortune stack is gained.
Row 4:Brimstone makes Reload Speed improvements also benefit Fire Rate, which creates a feedback loop with A Blur of Fingers and Brass. Fast C4SH scales Movement Speed with Fortune stacks.
Row 5:Firestorm adds Bonus Incendiary Damage to Guns that scales with movement speed. Burn the House Down lobs Fire Mortars at nearby enemies every time Fortune stacks are lost. Dusty Trail burns Fortune stacks while sliding, converting each lost stack into Gun Damage, Reload Speed, and Fire Rate.
Row 6:Nothing Beats Lead converts a portion of all Elemental Damage dealt into boosted Kinetic Damage. Bleed the Bad grants increased Elemental Effect Chance, Effect Damage, and Elemental Damage on Critical Hits, and kills with Crits lob Fire Mortars at nearby enemies with damage scaling off Fortune stacks.
Chaos Walking tree layout
Augment comparison: Which Augments are worth it?
C4SH can equip up to 4 Augments simultaneously thanks to Devil's Tines (available in all three trees). Here's a breakdown of the most notable options across all three Action Skills:
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The Cooler is arguably the highest-priority Augment for Sleight of Hand builds since doubling all Windfall bonuses compounds every other source of Windfall scaling in the tree.
How do you access C4SH in Borderlands 4?
According to Sportskeeda's coverage, C4SH releases with the Mad Ellie and the Vault of the Damned expansion on March 27, 2026. To play as him, you need either the Borderlands 4 Super Deluxe Edition, the Borderlands 4 Vault Hunter Pack, or the standalone expansion purchase.
C4SH's Fortune-into-Windfall loop is one of the more involved class mechanics Gearbox has built, and the sheer volume of Augments means no two builds will play identically. Whether you lean into Bone Totem swarms through Roll the Bones, stack Fortune multipliers in Luck of the Draw, or go full aggression through Chaos Walking, the kit rewards players who understand what triggers Windfall and what burns stacks most efficiently. For more Borderlands 4 Vault Hunter breakdowns and build guides, browse more guides on GAMES.GG.