The Lightning Arrow Deadeye build in Path of Exile 2 is a powerful and flexible choice for players seeking a versatile and effective character. This build offers excellent clear speed with Lightning Arrow while also providing strong single-target DPS using various synergies with Deadeye's Ascendancy nodes. Below, I've broken down the key elements of this build, including skills, itemization, and passive tree recommendations.

Playstyle
Lightning Arrow Deadeye is largely about mobility, high damage, and smooth gameplay. The basic concept is to deal with heavy elemental damage from afar while maintaining mobility. You'll typically hold one key for most of your damage output, making it a simple and efficient playstyle.
For boss fights, you'll need to add a few extra steps, such as placing Lightning Rods to chain lightning onto the target and utilizing Ball Lightning for massive shock damage.
Best Skill Gem Setup
Main Skill - Lightning Arrow
Support Gems:
Martial Tempo
Inspiration
Primal Armament
Ice Bite
Innervate
Secondary Skill - Lightning Rod
Support Gems:
Scattershot
Concentrated Effect
Close Combat
Overcharge
Rising Tempest
Cast on Shock Setup
Ball Lightning
Deceleration
Impetus
Energy Retention
Herald of Ice
Support Gems:
Conduction
Lightning Infusion
Cold Mastery
Lightning Penetration
Herald of Thunder
Support Gems:
Glaciation
Cold Infusion
Longshot
Lightning Mastery
Cold Penetration
Orb of Storms
Support Gems:
Chain
Persistence
Unleash
Overabundance
Wind Dancer
Support Gem:
Blind
Ghost Dance
Support Gem:
Fast Forward
Endgame Itemization
This build relies heavily on well-rolled Rare gear, but you will also need two powerful Unique Path of Exile 2 items that provide synergy for this build.
Bows
Best Base: Expert Dualstring Bow
Ideal Stats:
Increased Physical Damage
Adds Physical Damage
Adds Cold Damage
Increased Attack Speed
Bow Attacks Fire an Additional Arrow (prioritize this on non-dual string bows)
Quiver
Best Base: Primed Quiver
Ideal Stats:
Adds Physical and Cold Damage
Level of all Projectile Skills
Increased Attack Speed
Mana per Enemy Killed
Dexterity
Body Armor
Best Base: Expert Waxed Garb
Ideal Stats:
Increased Energy Shield & Evasion
Maximum Life
Spirit
Resistances to Fire, Cold, Lightning, and Chaos
Intelligence
Helmet
Best Base: Expert Feathered Tiara
Ideal Stats:
Maximum Life
Increased Energy Shield
Resistances to Fire, Cold, Lightning, and Chaos
Dexterity
Gloves
Best-in-Slot: Hand of Wisdom and Action
Alternative: Expert Spiral Wraps (if you can't afford HoWA)
Ideal Stats: