Diablo 4 Season 8 Boss Powers guide – how to unlock all 24 powers and their effects explained

Daily Mirror

28-04-2025

Season 8 of Diablo 4 is introducing a new seasonal mechanic called Boss Powers that lets players harness the powers of the game's bosses for themselves.
Another season, another mechanic, and Belial's Return lets you wield the powers of bosses past who've given you a good trouncing.
Diablo 4 Season 8 is shaking things up with its new Reliquary battle pass system, a Berserk collab, and is scrapping Ladder Bosses for Lair Bosses, that sees bosses break out into three tiers: Initiate, Greater, and Exalted, which denotes how tough they are, and how good of a reward you get for beating them.
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By defeating World, Event, and Lair bosses, you can claim their powers and wield them for yourself to give the monstrous denizens of Sanctuary a taste of their own medicine. This also includes the new Apparition Incursion event bosses.
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There are 24 Boss Powers to choose from in Diablo 4 Season 8, with each power having two effects – a Main and Modifier. These effects are activated depending on which Power Slot you pop them into, and you can have one Main and three Modifier Powers active at a time.
Here's a full breakdown of Diablo 4 Season 8 Boss Powers, how to unlock them, and their effects.
Diablo 4 Season 8 Boss Powers guide
Any difficulty level
Wandering Death's Chest Beam
Obtained after defeating the World Boss, Wandering Death
Main: While Channeling a Skill, spawn a beam that deals 300% Frostbite damage per second. Enemies hit take 50%[x] increased damage from you for 1 second.
Modifier: Your Main Boss Power instantly Executes Non-Boss enemies hit with less than 15.5% Life. When you Execute enemies you gain 25 Primary Resource.
Ashava's Poison Breath
Obtained after defeating the World Boss, Ashava
Main: Hitting an enemy affected by Damage over Time spawns a wave of acid that deals 1,200% Poisoning damage over 4 seconds. Applies 10% more Poisoning for each 1% of the target's current Life affected by Damage over Time.
Modifier: Once per activation, damaging an enemy with your Main Boss Power also applies 45% Poisoning damage to it over 3 seconds.
Avarice's Explosive Ore
Obtained after defeating the World Boss, Avarice the Gold Cursed
Main: When you gain excess Primary Resource, spawn a Piece of Ore. After 2.5 seconds the Piece of Ore explodes dealing 700% Fire damage. You can spawn up to 3 Pieces of Ore at once.
Modifier: Activating your Main Boss Power spends all your Primary Resource to increase its damage by 0.01%[x] per Resource point spent.
Allek's Talons
Obtained after defeating this Apparition in the Apparition Incursion event
Main: Casting a Basic Skill applies 200% Sparking damage over 4 seconds to enemies it hit.
Modifier: Gain 5% Movement Speed, increased by 0.5% for each 1% Cooldown Reduction you have, up to a maximum of 11%.
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Beastmaster's Training
Obtained after defeating this Apparition in the Apparition Incursion event
Main: Whenever you cast a Summon Skill or call a Mercenary for Reinforcement, one of your Summons or Mercenaries Stuns surrounding enemies for 2 seconds and gains 75% Damage Reduction.
Modifier: Your Summons deal 5%[x] more damage, increased by 0.25%[x] for each 1% Bonus Critical Strike Damage you have from items and Paragon, up to a maximum of 17%[x].
Blackmailer's Sabotage
Obtained after defeating this Apparition in the Apparition Incursion event
Main: Casting a Core Skill while you have a Barrier Knocks Down Close enemies for 1.1 seconds. This cannot occur on the same enemy more than once every 5 seconds.
Modifier: Whenever you gain Fortify, additionally gain 11% of the amount as Barrier for 6 seconds.
Flesh Reaper's Disruption
Obtained after defeating this Apparition in the Apparition Incursion event
Main: Damaging a Vulnerable enemy removes the Vulnerable and then Stuns them and surrounding enemies for 0.5 seconds. This Stun applies 100% more Stagger to Bosses.
Modifier: Gain 5%[x] Vulnerable Damage, increased by 0.5%[x] for each 1% of Crowd Control Duration Bonus you have, up to a maximum of 10.5%[x].
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Hatred's Embrace's Haste
Obtained after defeating this Apparition in the Apparition Incursion event
Main: Casting a Shadow or Fire Skill grants 1.1% increased Movement Speed for 3 seconds, up to 11%.
Modifier: Gain 5%[+] Critical Strike Chance, increased by 0.5%[+] for each 1% of Shadow Resistance you have, up to a maximum of 12%[+].
Kirma's Sparks
Obtained after defeating this Apparition in the Apparition Incursion event
Main: When you Evade, apply 200% Sparking damage over 4 seconds to Close enemies.
Modifier: Your Evade Cooldown is reduced by 5%, increased by 0.2% for each 1% Lightning Resistance from bonuses you have, up to a maximum of 11%.
Outlaw Sharpshooter's Eye
Obtained after defeating this Apparition in the Apparition Incursion event
Main: Dealing Direct Damage to a Distant enemy Slows them and surrounding enemies by 40% for 5 seconds.
Modifier: You deal increased damage to Enemies the further they are from you, up to 10.5%[x].
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Sinerat's Flames
Obtained after defeating this Apparition in the Apparition Incursion event
Main: Using a Mobility Skill Burns Close enemies for 50% Burning damage over 4 Seconds.
Modifier: Gain 5%[x] increased damage to all Elements. For each 1% of an Element's Resistance from bonuses, gain 0.2%[x] increased damage for that Element, up to a maximum of 15.5%[x].
Skerg's Toxins
Obtained after defeating this Apparition in the Apparition Incursion event
Main: When an enemy deals damage to you, apply 600% Poisoning damage to them over 4 seconds.
Modifier: When you take damage from a Damage Over Time effect, you have a 5% chance to be Healed instead, increased by 50% of your Poison Resistance from bonuses, up to a maximum of 12%.
Torusk's Rage
Obtained after defeating this Apparition in the Apparition Incursion event
Main: Damaging a Crowd Controlled enemy makes them and surrounding enemies Unstoppable but you gain 10.5%[x] increased Damage, Attack Speed, and Movement Speed for 3 seconds.
Modifier: Gain 5%[+] Attack Speed, increased by 0.25%[+] for each 1% Damage to Crowd Controlled Enemies you have, up to a maximum of 10.5%[+].
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Torment I difficulty level or higher
Belial's Crystal Decoy
Obtained after defeating Belial in a Lair Boss ambush
Main: When you Cast an Agility, Defensive, or Macabre skill, spawn a crystal that Taunts enemies and explodes after 3 seconds, dealing 600% Shadow damage.
Modifier: Activating your Main Boss Power Fears Nearby enemies for 0.75 seconds and deals 50% Shadow damage to them.
Lilith's Wind of Hate
Obtained after defeating Lilith
Main: When you Cast a skill, attack enemies with a wave of spikes that lasts 2 seconds and deals 400% Physical damage. Enemies take 60%[x] increased damage from Wind of Hate each time it hits them, up to 300%[x].
Modifier: Hitting an Elite enemy with a Main Boss Power creates an inert Blister Clone with 10% of their Maximum Life for 15 seconds. Killing the Blister removes 2.1% of the Elite's Life. An Elite can have up to 1 Blister active at once, and a Boss can have up to 2 Blisters. Enemies with Resilience cannot spawn Blisters.
Duriel's Burrow
Obtained after defeating the Greater Lair Boss, Duriel
Main: When you Evade, you now burrow underground, immobilizing surrounding enemies for 5 seconds and dealing 100% damage on your entry and exit. You deal 100% damage every 0.25 seconds while burrowed. Evade's Cooldown is increased by 4 seconds, and Cooldown Reduction on Evade is 50% as effective.
Modifier: Activating your Main Boss Power grants you 21%[+] increased Dodge chance for 5 seconds. Whenever you Dodge an attack you Immobilize Nearby enemies for 3 seconds.
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Belial's Eye Beams
Obtained after defeating the Exalted Lair Boss Belial, Lord of Lies
Main: After you drink a healing potion, gain 50% Damage Reduction for 2 seconds and summon eye beams that Corrupt enemies for 438% damage over 3.5 seconds. Then, your Healing Potion becomes disabled for 5 seconds. You may drink your Healing Potion at full Life.
Modifier: Activating your Main Boss Power grants Stealth for 2 seconds. After entering Stealth, you deal 11%[x] increased Overpower Damage for 2 seconds.
Andariel's Flaming Skull
Obtained after defeating the Greater Lair Boss, Andariel
Main: After standing still for 1 second, summon a skull for 4 seconds that rotates around you and breathes fire that Burns enemies for 450% damage over 3 seconds.
Modifier: Enemies take 10.5% more damage from your Damage over Time effects.
Beast in the Ice's Sleet
Obtained after defeating the Initiate Lair Boss, Beast in the Ice
Main: After casting 3 Skills which apply Crowd Control or Stagger effects, shoot out sleet spikes that deal 800% Cold damage and Freeze enemies for 2 seconds.
Modifier: Your Main Boss Power now Chills enemies it damages for 2.5%[x].
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Grigoire's Lightning Square
Obtained after defeating the Initiate Lair Boss, Grigoire
Main: After you cast a Core Skill, lightning tiles outward for 1.2 seconds dealing 250% Lightning damage per strike.
Modifier: Once per activation, damaging an enemy with your Main Boss Power Stuns enemies it hits for 0.25 seconds.
Lord Zir's Blood Pool
Obtained after defeating the Initiate Lair Boss, Lord Zir
Main: After you damage an enemy, spawn a pool of blood that deals 400% Bleeding damage per second over 4 seconds. You can have up to 3 active pools.
Modifier: Activating your Main Boss Power Heals you for 17% of your Maximum Life over 3 seconds.
Varshan's Life Steal
Obtained after defeating the Initiate Lair Boss, Varshan
Main: Every 1 second, attach a leeching beam to the closest enemy which deals 700% Corrupting damage to them and restores 15% of your Maximum Life.
Modifier: Activating your Main Boss Power inflicts Nearby enemies with 200% Corrupting damage over 2 seconds.
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Urivar's Lobbed Bombs
Obtained after defeating the Initiate Lair Boss, Urivar. Requires the Vessel of Hatred expansion
Main: After you Cast an Ultimate Skill, lob 4 bombs that deal 400% Fire damage. Gain 15% Cooldown Reduction.
Modifier: Killing an enemy with your Main Boss Power reduces your Ultimate Skill's Cooldown by 0.2 seconds.
Harbinger of Hatred's Volley
Obtained after defeating the Greater Lair Boss, Harbinger of Hatred. Requires the Vessel of Hatred expansion.
Main: After damaging a Vulnerable enemy, shoot piercing projectiles that last 1.3 seconds, dealing 250% Fire damage and applying Vulnerable. Deals 40%[x] increased damage to Vulnerable enemies.
Modifier: Casting a Basic Skill while at Maximum Resource spends it all to make all Nearby enemies Vulnerable. Activating your Main Boss Power grants 11%[x] increased Vulnerable Damage for 5 seconds.
And that's all 24 Boss Powers in Diablo 4 Season 8 that are ripe for the taking, so long as you defeat the bosses.