Chaos Perks

"Something incredible has descended upon Sanctuary, imbuing your abilities with devastating effect. Chaotic magic distorts all that it touches, even you! Chaos is of course, chaotic, and these Perks often come at a price for the power they provide."

- Description^(src)

Chaos Perks interface

Chaos Perks are a seasonal power in Diablo IV. They feature in Infernal Chaos.

Gameplay

Chaos Perks are both general and class-specific. They alter how a player's skills function. The system allows players to pick three non-Unique Perks and one Unique Perk from a pool of 16 — four of each rarity, where each rarity has one class-specific perk in addition to general powers. This tops out at 880 combinations for each class.

Players earn these seasonal powers by playing the seasonal quest and advancing the seasonal reputation and fighting the seasonal boss, Bartuc.

List

Generics

Magic

• Invigorating Attacks — Every 5 seconds, your next Basic Skill generates an additional 50-100% of your Maximum Primary Resource, but your Basic Skills deal 30% reduced damage.
• Accelerating Chaos — Lucky Hit: Damaging an enemy has up to a 10% chance to trigger a Chaotic Burst on the enemy, dealing 200-400% damage. Your Chaotic Bursts that hit an enemy reduce a random active Cooldown by 0.5 seconds.
• Unstable Power — Chaotic magics erupt from your Basic Skills, making them guaranteed to Critically Strike and Overpower for 50-100% increased damage, but the power is unstable, giving them a 3 second cooldown.

Rare

• Erupting Chaos — Chaotic Bursts randomly erupt around you, dealing 200-400% damage of your highest damage type. Your Chaotic Bursts also deal 100% of their initial damage over 4 seconds.
• Power Siphon — Your Core Skills deal 50-100% increased damage, but also reduce your Maximum Current Resource by 20 for 6 seconds. This reduction stacks but does not refresh.
• Alternating Alterations — Casting a Corse Skill empowers your next non-Channeled Cast of a different Core Skill, refunding 50% of its Resource cost and dealing 10-30% increased damage.

Legendary

• Marred Guard — You can no longer be healed above 50% Life. You gain 5-10% Maximum Resistance to All Elements, +20-40% Armor, and 50-100% increased Barrier and Fortify Generation.
• Chaotic Cooldowns — Casting a Skill with a Cooldown will randomly set its Cooldown between 2 seconds and its base cooldown. You no longer benefit from Cooldown Reduction. Using a Cooldown unleashes a Chaotic Burst, dealing 300-500% damage of your highest damage type.
• Crazy Brew — Your Healing Potion is infused with the power of Chaos, granting you 100% Resource Cost Reduction, 40-80%[+] increased Attack Speed and 40-80[+] increased Movement Speed for 4 seconds. Your Healing Potion has a 10 second Cooldown and you can drink it at full Life.

Unique

• Chaos Unleashed — Killing an enemy generates 2 stacks of Chaos and dealing direct damage to a boss generates 5 stacks of Chaos. At 100 stacks, unleash a salvo of 9 Chaotic Bursts, dealing 300-500% of your highest damage type.Your Chaotic Bursts gain 20% [+] Critical Strike Chance, and deal 50-100% [x] increased damage.
• Brawn Over Brains — Gain the following buffs, but your Maximum Resistances are reduced by 25%, and your damage reduction from Armor is capped at 60%:
  • 100-200% [x] Maximum Life
  • +50-100% Healing Received
  • 50-100%[x] Overpower Damage
• A Beast Cornered — For every 10% Life you are missing, you gain 10-20% [x] increased damage and 5% damage reduction. Spending Resources also drains a percentage of your Life equal to 30% the Resources spent, refunding those Resources. This cannot reduce you to below 10% Life.

Barbarian

• Dual Threat (Magic) — Casting a Basic Skill also uses another equipped Basic Skill at the target, dealing 50-80% of normal damage.
• Raging Chaos (Rare) — While you are not Healthy, you are Berserking and your Core Skills deal Fire damage and an additional Chaotic Burst of 100-200% Fire damage.
• Deafening Chorus (Legendary) — Your equipped Shouts are now always active with 20-40% increased effect, but your Maximum Current Fury is reduced by 20% per Shout equipped.
• Single-Minded Fury (Unique) — If you only have one Arsenal Weapon type equipped, gain the following:
  • +20-40% Overpower Chance
  • +100-200% Increased Bleed Duration
  • +50-100% Maximum Life
  • 50-100[x] Increased Damage

Druid

• Overabundance (Magic) –– Every 50 Spirit you generate above your Maximum increases your damage by 10-20% for 5 seconds. This bonus stacks, but does not refresh.
• Purge the Infected (Rare) — Your Core Skills also apply 100-200% of their Base damage as Poisoning over 4 seconds. Dealing direct damage to a Poisoned enemy spends 5 Spirit to be a guaranteed Critical Strike.
• Wild Transformations (Legendary) — Shapeshifting into a new form uses a free Skill and grants an additional bonus for 5 seconds:
  • Werewolf uses Blood Howl, 10-20%[x] Critical Strike Damage
  • Werebear uses Debilitating Roar, 10-20% Damage Reduction
  • Human uses Cyclone Armor, 10-20%[x] Attack Speed
• Savagery (Unique) — Your Companion Skills are altered to also be Core Skills. Your Companions grow in size. Gain 30-60%[x] Summon Damage.

Necromancer

• Grim Reapers (Magic) — Your Skeleton Warriors now also use Reap dealing 50-150% of normal damage in addition to their regular attacks.
• Decimating Desecration (Rare) — Your damage over time effects have a chance equal to your Critical Strike Chance to deal 50-100%[x] increased damage.
• Defile the Dead (Legendary) — You can consume each Corpse twice. Consuming at Corpse creates a Chaotic Burst, dealing 200-400% Shadow damage.
• Alter the Balance (Unique) — Your base Core Skills are now empowered as Ultimate Skills, cost no Essence, but have a 30-20 second Cooldown. Your base Ultimate Skills are now altered to also be Core Skills and have no Cooldown, but cost 70-50 Essence.

Rogue

• Unpredictable Alchemy (Magic) — Imbuements flow wildly, Imbuing every Basic Skill Cast with a random Imbuement. Imbued Skills deal 20-40%[x] increased damage.
• Enervated Strikes (Rare) — You no longer passively generate Energy. Gain the following:
  • +50-100% Chance for Twisting Blades to Hit Twice
  • +50-100% Chance for Flurry Deal Double Damage
  • +50-100% Chance for Barrage Projectiles to Cast Twice
  • +50-100% Chance for Rapid Fire Projectiles to Cast Twice
  • +50-100% Chance for Rapid Fire Projectiles to Cast Twice
• Chaotic Grenades (Legendary) — Your Stun Grenades also trigger a Chaotic Burst, dealing 50-100% Physical Damage. Chaotic Bursts generate 5 Energy if they hit an enemy.
• Hit and Run (Unique) — Every 15 meters you move grants you 30-50%[x] increased damage for 5 seconds. This bonus stacks, but does not refresh. If this bonus is not active, you deal 30% reduced damage.

Sorcerer

• Explosive Combinations (Magic) — Casting a Basic Skill increases the damage of your next Core Skill Cast by 30-50%[x] stacking up to 3 times.
• Advanced Techniques (Rare) — Your base Core skill ranks increase their Mana Cost or Cooldown by 10% and further increase their damage by 10-20%[x].
• Mana Infused Conjurations (Legendary) — Your Conjurations are empowered and deal 10-30%[x] increased damage but each one drains 5 Mana per second.
  • Ice Blades attacks burst in an area around the target.
  • Lightning Spear hits have a 10% chance to spawn static Ball Lightnings.
  • Familiar leaves damaging ground after its attack.
  • Hydra periodically creates Firewalls towards the target.
• Mana Shield (Unique) — You have 99% reduced Maximum Life but any damage you would take is dealt to your Mana before your Life. If you have not taken damage in the last 4 seconds, your Mana Regeneration is increased by 5,000%[+]. You gain 200-400% increased Maximum Mana and each point of Intelligence increases your Maximum Mana by 1.

Spiritborn

• Alacrity (Magic) — Your Basic Skills gain 10-30%[+] increased Attack Speed, their dash range is increased by 50% and their 3rd attack now happens every 2nd attack.
• Combined Strikes (Rare) — Your base Core Skills hit additional times in a larger area for 20-40%[x] increased damage, but also have a 10 second cooldown. Your Basic Skill’s 3rd attack resets the cooldown on your Core Skills.
• Back Off! (Legendary) — When Casting a Skill, it deals 30% reduced damage to enemies who are Close to you when you Cast and 100-200%[x] increased damage to all other enemies.
• Convocation of Spirits (Unique) — Casting a Non-ultimate Skill has a 1% chance to invoke the Spirits of that Skill’s types which deal 100-200%[x] increased damage. This chance is increased by 1% of your Ultimate Skill Damage, up to 10%.