Path of Exile 2 builds its entire gameplay experience around skill gems. These gems don't just add abilities, they shape the very identity of a character. Whether you're planning a defensive tank, a glass-cannon spellcaster, or a balanced hybrid, your gem setup dictates your playstyle, resource management, and overall power. Among the many support gems available in the game, Atalui's Bloodletting stands out as one of the most unique and desirable choices for endgame players.

This article will explain what Atalui's Bloodletting does, why it's so impactful, and how you can obtain it in Path of Exile 2.
What is Atalui's Bloodletting
Atalui's Bloodletting is a Lineage Support Gem that falls under the Lifetap category. Unlike many gems that simply scale damage or add effects, this one fundamentally changes how your character manages resources.
Instead of requiring large amounts of mana, supported skills are converted into hybrid mana-life cost skills. In other words, your character spends life alongside or instead of mana to cast abilities. This makes it perfect for builds that have naturally low mana pools but huge reserves of life.
But it doesn't stop there, Atalui's Bloodletting also adds damage scaling tied directly to the amount of life spent. This creates a rewarding risk-reward dynamic: the more health you commit to casting, the harder your abilities hit.
Item Information
Category: Lifetap Support
Cost & Reservation Multiplier: 150%
Required Level: 65
Support Requirement: +5 Strength
Unique Abilities
Supports any skill, converting part of its mana cost into a life cost.
Does not support skills that reserve Spirit (which prevents overlap with aura setups).
Supported skills gain a portion of their life cost as extra physical damage.
Converts skill mana costs fully into life costs.
Supported skills gain 2% of damage as extra physical damage per 10 life spent.
What This Means for Builds
Atalui's Bloodletting completely changes how you approach expensive, high-damage abilities. Normally, spamming heavy skills would drain your mana pool quickly, leaving you unable to sustain your damage output. With this gem, those same skills now consume life, a resource many builds can manage more flexibly thanks to regeneration, leech mechanics, or high maximum life pools.
The scaling is also significant. Imagine casting a 100-life cost skill: that translates into an additional 20% of that value as physical damage. When multiplied across several high-cost casts, the damage potential skyrockets.
This makes the gem particularly attractive for aggressive melee and physical builds, where survivability and health recovery tools already exist to mitigate the risk of spending life as a casting resource.