Belial, Lord of Lies Boss Guide
Last Updated:April 28, 2025|Changelog
Welcome to the Belial, Lord of Lies Boss Guide. Here you will find all the information to gather Boss Lair Keys, summon the Boss, and successfully defeat it.

Basic Information
- Cosmetic Reward: Unknown
- Boss Lair Key: 2x Betrayer's Husk
- Source: Ambush Encounter
Boss Location
Belial, Lord of Lies can be summoned within the Palace of the Deceiver in the desert of Kehjistan. To challenge him, use the quick travel option by clicking the Palace of the Deceiver, or travel there normally using the Tarsarak Waypoint.


Boss Mechanics and Strategy
Pay attention to the attacks used by Belial, Lord of Lies! The following section guides you through the boss's most dangerous abilities.
Belial, Lord of Lies' Abilities

Crushing Slam
Belial, Lord of Lies slams his fist into the ground and swipes it across the entire platform, dealing high damage and knocking players back.
- Watch for the animation as this can overlap with other deadly mechanics.

Toxic Breath
Belial, Lord of Lies prepares himself briefly before using a frontal beam from one side of the platform to the other and it deals devastating damage.
- Make sure to stand on the opposite side of where the breath starts unless you can teleport over it to avoid the damage.

Poisonous Pools
Pools of Poison spawn underneath Belial, Lord of Lies' fists, and the player, dealing moderate damage over time while standing within its area of effect.
- Be aware of the permanent Poisonous Pools as Poisonous Waves appear from them.
- The small pools underneath the players despawn immediately after detonating.

Poisonous Waves
Waves emerge from the Poisonous Pools, going left and right from the pools. These waves deal a large amount of damage.
- Plan your movement to ensure you are in a safe location before the waves arrive.

Eye Beams
Belial, Lord of Lies spawns multiple eyeballs facing different directions. After a brief moment, the eyeballs looking toward the platform create void zones in their line of sight, dealing significant damage over time.
- This can overlap with Belial, Lord of Lies' other abilities, causing nasty combinations. Make sure to stand in an area where the eyeball is facing away from the platform.
Useful Tips!
Before heading out, consider a quick stop at the Alchemist to pick up elixirs to help counter his Shadow and Poison abilities.
To see our best Boss killers, check out our Boss Killer Tier List!
Loot Tables and Rewards
Each Boss has a different loot table of Uniques and cosmetic item(s), with a chance of dropping the highly sought-after Mythic Unique items. How loot is distributed and rewarded has been changed with Season 8, and is now tied to using the Boss Lair Keys.
To receive loot, you must use 2x Betrayer's Husk to open the Hoard. You get these from killing the Ambush encounter version of Belial. The Hoard has 2 Unique items in Torment 1, granting one extra for each Torment difficulty increase, and 2 extra for Torment 4. You are guaranteed one boss-specific Unique when you open a Hoard. You can increase this by 1 for doing Torment 3 or higher, and another 1 for being in a party. While in a party, you have a 33% chance of getting 1 additional class-specific item per party member.
Unique to Belial, Lord of Lies is that he does not have a loot table. Instead, you get to modify the loot that will drop from him when you open the Hoard. The options available are each of the bosses from the Boss Ladder. This Hoard will also contain one guaranteed Ancestral Unique item. Use our Boss Cheat Sheet to see what loot you can get from the different bosses.

Mythic Uniques
- All bosses have a chance to drop Mythic Unique items.
- These items are very powerful and very rare.
Most endgame builds use one of these items. Thankfully, the Boss ladder encounters have a greater chance of dropping them. This means you can focus on any boss that drops regular Unique items you are looking to obtain or upgrade while still having a chance at a Mythic Unique.
- Check out our Unique and Mythic Unique Guide for more details and more ways to obtain these truly Mythic items.

If you want a handy reference for the items you can farm from each of the endgame bosses, check out our Boss Cheat Sheet!
Cosmetic Reward
It is currently unknown if Belial, Lord of Lies has an exclusive cosmetic reward when you defeat him.
Ambush Encounter

On rare occasions, Belial, Lord of Lies ambushes you after defeating the other Boss Lair encounters in Diablo 4. This is an entirely different encounter compared to its Boss Lair counterpart. After defeating a Boss, a timer starts, and once finished, there is a chance for Belial, Lord of Lies to spawn.
Upon Belial, Lord of Lies' defeat, the loot available from the previous fight will drop as well as Betrayer's Husk, which is required to loot the normal version of the encounter.

Ability Overview

Detonating Crystal
Belial, Lord of Lies spawns 1-2 crystals slowly moving toward the player. After 4 seconds, the crystals detonate where they are, dealing massive damage.
- At 3 seconds, dash or run out of the circle.

Deception
Belial, Lord of Lies creates a decoy of himself, using the same abilities as the real version.
- This decoy is much weaker and can be killed with only a few hits.

Poisonous Blast
Belial, Lord of Lies attacks with a frontal blast, dealing Poison damage in a straight line.
- The decoy also uses this ability.

Arena of Deceit
Belial, Lord of Lies traps the player within a deadly circle and summons multiple decoys that frequently mimic his attacks, aiming to overwhelm the player.
- Make sure to stay mobile during this phase and focus on avoiding mechanics.

Acid Rain
Belial, Lord of Lies launches poisonous blobs into the sky, which land in random nearby areas and deal moderate damage. Nangari adds have a chance to spawn from where the blobs land on the ground.
- Make sure to stay mobile during this phase and focus on avoiding mechanics.
Summary
Our Belial, Lord of Lies Boss Guide covers everything you need to know about where to go, and how to complete this encounter.
- Kill the ambush encounter of Belial, Lord of Lies to obtain 2x Betrayer's Husk to open Belial, Lord of Lies's Hoard inside the Palace of the Deceiver.
- This is located in Kehjistan, west of the Tarsarak Waypoint.
- Make sure your gear is the best it can be; Upgraded Armor and Gems.
- Belial, Lord of Lies's attacks deal Shadow and Poison damage, try grabbing Elixirs which increase your Shadow and Poison Resistance.
Credits
Written by Avarilyn
Reviewed by Icytroll, IBoilerUp