Path of Exile 2 Arc Gemling Legionnaire Build Guide: Best Six-Totem Setup for Endgame

Summary

The Arc Spell Totem Gemling Legionnaire is a one-button mapping powerhouse. You place totems, they cast Arc automatically, and keep moving while they clear everything around you. This build excels at high-end mapping, expeditions, and pinnacle bosses. While the current version is heavily invested, the basic framework can be started for much less. If you want to skip the early grind, you can buy POE2 Currency to speed up gearing. Either way, the build improves gradually as you add skill levels, Spirit, and mana scaling.

Core Mechanics

Reaching Six Totems

The path to six totems starts with the Spell Totem gem itself. At level 23, Spell Totem has a base limit of three totems. Taking Ancestral Bond on the passive tree doubles that limit to six . Ancestral Bond removes the mana cost for placing totems, but each totem reserves Spirit instead . With six totems active, the quality investment gives Arc more damage and makes every totem cast faster .

Quality Double-Dipping

The Gemling Legionnaire ascendancy is what makes this build shine. Advanced Thaumaturgy gives every skill an additional quality effect .

For Arc, this means more damage for each remaining chain. For Spell Totem, it grants increased cast speed per summoned totem. With six totems up, this provides substantial cast speed .

Dominus' Grasp doubles Arc's chain count . Arc begins with many more chains remaining, making the quality damage bonus much stronger, especially against the first target hit . This is the main gem link interaction.

Mana as Defense and Damage

Mana serves as both your defensive layer and your primary damage scaler.

Mind Over Matter makes all damage hit your mana before your life. As long as you have mana, incoming damage is taken from mana first . This is especially important because the build plays on low life—your life pool sits behind the mana pool .

Eldritch Battery converts energy shield from your items into maximum mana . Energy shield on helm, body armor, gloves, and boots all becomes part of your mana pool instead of staying separate.

Mana also provides damage scaling through passive tree nodes that grant spell damage per 100 maximum mana. Archmage adds extra lightning damage based on your mana pool, fitting naturally on top of the defensive setup .

Low Life Setup

Archmage normally reserves Spirit. By linking it with Zerphi's Communion, the reservation shifts from Spirit to life. This reserves enough life to keep the character on low life .

Once on low life, you gain access to:

Pain Attunement: 30% more critical damage bonus 

Execute Tree support: extra damage while on low life, and more damage again when enemies reach low life

This works because Mind Over Matter makes all damage go through mana before life. Mana protects the small life pool while reserving life gives you massive damage boosts.

Gem Links

Main Setup: Spell Totem + Arc

The six-link setup:

Spell Totem - turns Arc into a totem skill

Arc - lightning chaining projectile 

Dominus' Grasp - doubles chain count

Scion's Temper - fires extra projectiles in a circle for better coverage

Urgent Totems - increased placement speed

Execute Tree - more damage on low life

Utility Gems

Archmage + Zerphi's Communion - moves reservation to life, activates low life

Mana Remnants - main recovery tool; creates remnants on kill or crit that overflow mana

Charge Regulation - power charges give critical hit chance

Blasphemy + Temporal Chains - slows enemies around you

Purity of Ice - granted by scepter; helps resistance setup

Clarity, Vitality, Cannibalism - extra recovery; no Spirit cost due to Impurity skill

Item Priorities

Wand

The main damage item. Priority: +levels to spell/lightning skills, mana, cast speed, spell critical hit chance .

Scepter

Main Spirit source. Grants Purity of Ice (or another Purity) and provides mana/mana regen .

Amulet

+3 to all spell skills, 50 Spirit, maximum mana, cast speed. Critical for both Spirit setup and damage .

Body Armor

58 Spirit and reservation efficiency. Bonus: desecrated modifier giving 5% quality to all skills .

Helmet

Reservation efficiency, mana, energy shield. Energy shield becomes mana through Eldritch Battery .

Rings

Large mana pieces. Flat mana, increased maximum mana, cast speed, resistances .

Gloves

Projectile skill levels, cast speed, mana, critical damage bonus. Maligaro's Virtuosity can set critical damage bonus to a fixed amount, simplifying scaling .

Boots

Movement speed, mana, energy shield, resistances .

Belt

Headhunter for mapping speed with rare monster buffs. Mageblood provides more consistent damage. The build works without either .

Ascendancy

Key nodes:

Advanced Thaumaturgy - additional quality effects

Neurological Implants - +2 levels to all intelligence skills

Jump Started - bonuses based on most common support gem color

Essence of Future - grants Virtuous Barrier for recovery

Jewels and Passive Tree

Split Personality Ruby allows allocating passives from the Templar starting point .

From Nothing Diamond lets passives in Conduit radius be allocated without connection to the tree.

Time-Lost Sapphire grants increased critical hit chance, critical damage bonus, and maximum mana from notable passives in radius.

The passive tree follows the same logic as the rest: totem nodes for placement speed, critical hit chance and damage, Pain Attunement for low life, Ancestral Bond, Mind Over Matter, Eldritch Battery, mana regen, and reservation efficiency.

Getting Started

The current version is heavily invested, but the basic build can start with much less . First goals:

A wand with spell/lightning skill levels

A high Spirit scepter

Enough Spirit and reservation efficiency for your chosen number of totems

As much mana and energy shield as you can fit

At a lower budget, you may begin with fewer than six totems. The build improves step by step as you add skill levels, Spirit, mana, quality, and critical scaling .

Final Notes

The main weakness remains narrow layouts. In open maps, totems can be placed ahead and clear at range. Inside tight corridors, placement can feel awkward and enemies may reach you before the setup is ready. For mapping efficiency, prioritize open areas where the auto-targeting and screen-wide clear can shine. If you're looking to speed up your progression without the farming hassle, you can find POE2 Currency for sale through trusted platforms like MMOEXP, which offers competitive rates to help you gear up faster. For mapping, stick to open layouts where this build truly excels.