School of Illusion Subclass Guide and Build

The School of Illusion is a Wizard subclass in Baldur's Gate 3 (BG3). Check out our guide for how to unlock the School of Illusion subclass, its features, as well as the best build.

Wizard Subclasses Wizard Class Guide
Abjuration	Conjuration	Divination	Enchantment
Evocation	Illusion	Necromancy	Transmutation

Illusion Subclass Overview

Illusion Basic Information

Subclass Overview
	School of Illusion You specialise in unravelling and restitching the fabric of reality to fool the unwary, the gullible, and the monstrous.
Main Class	Wizard
How to Unlock	Reach Wizard Level 2.
Spellcasting Ability	Intelligence
Starting Subclass Features
・Grants the Illusion Savant Passive. ・Grants access to the Improved Minor Illusion Spell. ・All Wizard Class Features and Proficiencies.

Illusion Wizards use their spells to befuddle and confuse their foes. In combat, they cast illusions of themselves and of creatures, drawing in their opponents and leaving them open for attack.

How to Unlock the Illusion Subclass

Available Once Your Wizard Reaches Level 2

The School of Illusion subclass will become available once your Wizard reaches Level 2. In order to earn EXP and level up in Baldur's Gate 3, players will need to complete quests, discover new areas, or defeat enemies they find in the world.

Illusion Subclass Features

Illusion Savant

Upon unlocking the Illusion subclass at Level 2, your Wizard will get the Illusion Savant passive. With this active, learning Illusion spells from spell scrolls will only cost 25 Gold per spell level.

Improved Minor Illusion

Once you choose the School of Illusion subclass at Level 2, you will gain access to an Improved Minor Illusion cantrip. Instead of using up an action to cast, this improved version only uses a Bonus Action.

In combat, this allows you to lure enemies into the illusion before letting loose with your AoE spells. This also means that you can setup for your teammates without forfeiting your regular action during a turn.

See Invisibility

At Level 6, you get a class action called See Invisibilty. When cast, you receive an effect that allows you to see invisible creatures within a 9m radius. This effect will last until you take a Long Rest. Additionally, it can be refreshed by taking a Short Rest.

Illusory Self

Once you hit Level 10, you gain the Illusory Self reaction. When attacked, you can react to create an illusion of yourself. The attacker will hit this illusion, causing them to miss but also dispelling the illusion. The Illusory Self reaction can only be used once per Short or Long Rest.

Illusion Level Progression

Best Illusionist Build

School of Illusion Build Overview

Note: This build is subject to change as we're currently testing and searching for better gear in the game!

The items on this build are all scattered throughout all three acts. If you don't have them yet, it's best to buy a +1 equipment of the same type from a merchant until you get them.

Helm

Diadem of Arcane Synergy

The Diadem of Arcane Synergy can give Aracane Synergy for two turns when applying status conditions, allowing you to use your Intelligence modifier when hitting enemies with your melee attacks. This works well with Greater Invisibility strategies as it immediately allows you to gain the Arcane Synergy charges upon casting the spell on yourself.

How to Get the Diadem of Arcane Synergy

Dark Justiciar Helmet

The Dark Justiciar Helmet can serve as a great alternative as it can boost your critical rates when obscured. Wearing this along with the Eversight Ring allows you to use Fog Cloud on yourself without getting blinded and only getting the obscured status condition.

How to Get the Dark Justiciar Helmet

Gloves

Quickspell Gloves

Using the Quickspell Gloves lets you use cantrips as bonus actions, allowing you to hit twice in one turn.

How to Get the Quickspell Gloves: Armor Guide

Boots

Disintegrating Night Walkers

Disintegrating Night Walkers grants you the ability to use a spell Misty Step as a class action. It also protects you several status conditions that targets your mobility such as getting Enwebbed, Entangled, or Ensnared.

How to Get Disintegrating Night Walkers

Melee Weapons

Staff of Spell Power

Using the Staff of Spell Power can help you cast spells without using spell slots with its built-in Arcane Battery effect. Having this quarterstaff equipped can immensely help you save your spell slots during combat.

How to Get the Staff of Spell Power

Accessories

Spellcrux Amulet

The Spellcrux Amulet can help you recover any missing spell slots with its Spell Slot Restoration feat.

How to Get the Spellcrux Amulet

Shifting Corpus Ring (Ring)

Shifting Corpus Ring allows you to use Blur and Invisibility as Class Action spells. You can use this once in every long rest.

How to Get the Shifting Corpus Ring

Eversight Ring (Ring)

The Eversight Ring can protect you from getting blinded by enemy attacks or traps.

How to Get the Eversight Ring

Band of the Mystic Scoundrel (Ring)

The Band of Mystic Scoundrel grants you the ability to use Illusion Spells as bonus actions with the only condition of attacking enemies with only melee attacks. Make sure to use Greater Invisibility to freely hit enemies without being seen.

How to Get the Band of the Mystic Scoundrel

Best Races to Use for School of Illusion

High Half-Elf

High Half-Elf Wizards greatly benefit from wide variety of cantrips that this race offers. You also gain the Fey Ancestry feature which prevents you from getting the Sleep and Charm status condition.

• Civil Militia provides Proficiency with spears, pikes, halberds, and glaives, and Armour Proficiency with Light Armor and Shields.
• Fey Ancestry gives you full immunity to charm and sleep.
• Darkvision allows you to see in the dark up to a range of 12m.

High Half-Elf Subrace Guide and Best Classes

Wood Elf

Illusionists will greatly benefit from the the additional movement speed granted by the Wood Elf race. Consider picking this race if you're planning to take this subclass for your wizard.

• Fey Ancestry gives you full immunity to charm and sleep.
• Darkvision allows you to see in the dark up to 12m.
• Fleet of Foot increases movement speed by 1.5m.

Wood Elf Subrace Guide and Best Classes

Asmodeus Tiefling

Asmodeus Tiefling gives you extra protection to fire damage and burning terrains with the Hellish Resistance feat.

• Darkvision allows you to see in the dark up to 12m.
• Hellish Resistance allows your character to only take half damage from Fire-based attacks.
• Produce Flame lights up surroundings in a 9m radius and deals 1-8 Fire damage when thrown.

Asmodeus Tiefling Subrace Guide and Best Classes

Best Ability Score for School of Illusion

Ability Score Overview

As an Illusionist, focus on maximizing your Intelligence as this is the primary ability for all Wizards.

Illusionist Wizards will also benefit from having a decently high Constitution to prevent them from breaking their concentration spells during combat.

Best School of Illusion Feats

Ability Improvements

Ability Improvements can help you maximize your Intelligence further. Choose this if you want to add more damage output to your spells.

Ability Improvements Feat Guide and Effects

War Caster

War Caster can help you improve your concentration. This is a good feat to have if you're planning to use spells that requires concentrations.

War Caster Feat Guide and Effects

Magic Initiate: Druid

The Magic Initiate: Druid lets you learn the spell Shillelagh. This allows you to inflict magic damage when using melee weapons and help you trigger the effects of Band of the Mystic Scoundrel if equipped. Using Shillelagh will also use your Intelligence modifier as well instead of Wisdom.

Magic Initiate: Druid Feat Guide and Effects

Baldur's Gate 3 Related Guides

Wizard Class Guide

All Wizard Subclasses

All Wizard Subclasses
Abjuration		Conjuration		Divination
Enchantment		Evocation		Illusion
Necromancy			Transmutation