Belial's Return marks the eighth season of Diablo 4, adding a new suite of boss powers for players to unlock. These powers are direct copies of the hard-hitting powers seen in Diablo 4's pinnacle bosses. Mimic Lilith's spike attack, Ashava's poison breath, or even Belial's eye beam attack. Nearly every strong ability used by Diablo 4's endgame bosses are now at your disposal.
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PostsBut getting your hands on these powers will prove tricky. You'll need to best these endgame bosses first before you can claim their power. This guide will explain how these boss powers work, how to unlock them, and give a rundown of what all 24 powers do in Diablo 4: Belial's Return.
What Are Boss Powers?
Boss powers are a seasonal mechanic added in Season 8: Belial's Return. Upon defeating bosses in Sanctuary, you will receive a small fragment of their power. You can socket these powers into your character through the "Boss Powers" tab of your inventory, similar to Vampiric Powers from the second season.
Each power comes with two modifiers:
- Main: Grants you a powerful ability that triggers under certain conditions, usually mimicking the boss it dropped from.
- Modifier: Grants passive buffs to your character or augments your main boss power.
You may have a maximum of one main power and three modifiers active at a time.
Unlocking Boss Powers
Boss powers are acquired by slaying Diablo 4's endgame bosses. The name of the boss power denotes the drop source. For example, if you want to get Beast in the Ice's Sleet attack, you'll need to defeat Beast in the Ice in their boss lair. In general, magic powers come from seasonal activities, rare powers come from lair bosses, and legendary powers drop from pinnacle bosses.
Upgrading Boss Powers
Upgrading a boss power will require the use of Spirit Powder, a seasonal currency awarded from Apparition Incursions and other Belial-themed content. To upgrade your boss power, simply hover over the power in your "Boss Powers" UI and hold the upgrade button. Each upgrade gets progressively more expensive, so be sure you're focusing on upgrading powers that benefit your build.
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PostsAll Boss Powers
There are 24 boss powers in Belial's Return, most of which are quite powerful for endgame content. Numbers listed below are for Level 1 powers with a low-level character. As you grow in power and level your boss powers, these values will become significantly higher.
Magic Powers
Boss Power
Main Effect
Modifier
Torusk's Rage
Damaging a CCd target makes them and surrounding enemies Unstoppable, but you gain [x] increased damage, movement speed, and attack speed for 3 seconds.
Gain [+] attack speed, increased by 0.25% for each 1% damage to CCd enemies you have, up to a maximum value.
Skerg's Toxins
When an enemy deals direct damage to you, apply a [600%] poison that ticks over 4 seconds.
When you take damage over time, you have a 5% chance to be healed instead, increased by 50% of your poison resistance stat, up to a maximum value.
Sinerat's Flames
Using a mobility skill burns close enemies for [50%] burning damage over 5 seconds.
Gain 5%[x] increased damage of all elements. For each 1% of an element's resistance you have, gain 0.2%[x] increased damage of that element, up to a maximum value.
Outlaw Sharpshooter's Eye
Dealing direct damage to a distant enemy slows them and surrounding enemies by 40% for 5 seconds.
You deal increased damage to enemies the further they are from you, up to 10.5%[x].
Kirma's Sparks
When you Evade, apply a [200%] Sparking damage effect over 4 seconds to close enemies.
Your Evade cooldown is reduced by 5%, increased by 0.2% for each 1% lightning resistance you have, up to a maximum value.
Hatred Embraces Haste
Casting a shadow or fire skill grants increased movement speed for 3 seconds, up to a maximum value.
Gain +5% critical strike chance, increased by 0.5% for each 1% shadow resistance from bonuses you have, up to a maximum value.
Flesh Reaper's Disruption
Damaging a Vulnerable enemy removes the Vulnerable status and then stuns the target and surrounding enemies. This stun applies 100% more stagger to bosses.
Gain x5% Vulnerable damage, increased by 0.5% for each 1% CC duration you have, up to a maximum value.
Blackmailer's Sabotage
Casting a core skill while you have a Barrier knocks down close enemies. This cannot occur on the same enemy more than once every 5 seconds.
Whenever you gain fortify, gain 11% of that amount as Barrier.
Beastmaster's Training
Whenever you cast a summoning skill or call a Mercenary, one of your summons/mercs stuns surrounding enemies and gains 75% damage resistance.
Your summons deal x5% more damage, increased by 0.25% for each 1% bonus critical strike damgae you have from items and Paragon, up to maximum value.
Allek's Talons
Casting a basic skill applies [200%] Sparking damage over 5 seconds to enemies it hits.
Gain 5% movement speed, increased by 0.5% for each 1% cooldown reduction you have, up to a maximum value.
Rare Powers
Wandering Death's Chest Beam
While channeling a skill, spawn a beam that deals 300% Frostbite damage per second. Enemies hit take x50% increased damage from you for 1 second.
Your main boss power instantly executes non-boss enemies under 15.5% HP. When you execute enemies, gain 25 primary resource.
Avarice's Explosive Ore
When you gain excess primary resource, spawn a piece of ore. After 2.5 seconds, the piece of ore will explode for [700%] fire damage. You can spawn 3 pieces of ore at once.
Activating your main boss power spends your primary resource, increasing damage by 0.01% per resource point spent.
Ashava's Poison Breath
Hitting an enemy afflicted by a DoT effect spawns a wave of acid, dealing [1,200] poison damage over 4 seconds. Applies 10% more poison for each 1% of the target's current life is affected by DoT.
Once per activation, damaging an enemy with a main boss power also applies 45% poison damage to it over 3 seconds.
Urivar's Lobbed Bombs
After you cast an ultimate skill, lob 4 bombs that deal [400%] fire damage. Gain 15% cooldown reduction.
Killing an enemy with your main boss power reduces your ultimate skill's cooldown by 0.2 seconds.
Vershan's Life Steal
Every 1 second, attach a leeching beam to the closest enemy, dealing [700%] corrupting damage to them while restoring 15% of your max HP.
Activating your main boss power inflicts nearby enemies with [200%] corrupting damage over 2 seconds.
Lord Zir's Blood Pool
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.
Activating your main boss power heals you for 17% of your max HP over 3 seconds.
Girgoire's Lightning Square
After you cast your core skill, lightning tiles outward for 1.2 seconds, dealing [250%] lightning damage per strike.
Once per activation, damaging an enemy with your main boss power stuns enemies hit.
Beast in the Ice's Sleet
After casting 3 skills which apply CC or stagger effects, shoot out sleet spikes that deal [800%] cold damage and freeze enemies for 2 seconds.
Your main boss power now chills enemies it damages for 2.5%[x].
Belial's Crystal Decoy
When you cast an agility, defensive, or macabre skill, spawn a crystal that taunts enemies and explodes after 3 seconds, dealing [600%] shadow damage.
Activating your main boss skill fears nearby enemies and deals [50%] shadow damage to them.
Legendary Powers
Harbinger of Hatred's Volley
After damaging a vulnerable enemy, shoot piercing projectiles that last 1.3 seconds, dealing [250%] fire damage and applying Vulnerable.
Deals x40% more damage to Vulnerable enemies.
Casting a basic skill while at maximum resource spends it all to make all nearby enemies Vulnerable. Activating your main boss power grants x11% increased Vulnerable damage for 5 seconds.
Duriel's Burrow
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 0.25s while burrowed.
Evade's cooldown is increased by 4 seconds, and cooldown reduction on Evade is 50% as effective.
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.
Andariel's Flaming Skull
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.
Enemies take x10% more damage from DoT effects.
Lilith's Wind of Hate
When you cast a skill, attack enemies with a wave of spikes that lasts 2 seconds and deals [400%] physical damage.
Enemies take x60% increased damage from Wind of Hate each time it hits them, up to 300%.
Hitting ane elite enemy with a main boss power creates an inert blister clone with 10% of their max HP 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; bosses can have 2. Enemies with resilience cannot spawn blisters.
Belial's Eye Beams
After you drink a healing potion, gain 50% DR for 2 seconds and summon eye beams that corrupt enemies for [438%] damage over 3.5 seconds. Then, your healing potions become disabled for 5 seconds.
You may drink your healing potions while on full life.
Activating your main boss power grants stealth for 2 seconds. You deal x11% increased overpower damage while stealthed.
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