Leech

Uniques

Atziri's Acuity
Leech 10% of Physical Attack Damage as Life
Carnage Heart
(25-50)% increased Damage while Leeching
Corona of the Red Sun
Leeching Life from your Hits causes Allies in your Presence to also Leech the same amount of Life
Death Rush
Leech 5% of Physical Attack Damage as Life
Font of Power
Sacrifice 20% of Mana and they Leech that Mana
Grip of Kulemak
(20-30)% of Mana Leeched from targets affected by Abyssal Wasting is Instant
Grip of Kulemak
(20-30)% of Mana Leeched from targets affected by Abyssal Wasting is Instant
Grip of Kulemak
(20-30)% of Mana Leeched from targets affected by Abyssal Wasting is Instant
Grip of Kulemak
(20-30)% of Mana Leeched from targets affected by Abyssal Wasting is Instant
Grip of Kulemak
(20-30)% of Mana Leeched from targets affected by Abyssal Wasting is Instant
Heart of the Well
(8-15)% of Leech is Instant
Lifesprig
Leeches 1% of maximum Life when you Cast a Spell
Slivertongue
Leeches (5-8)% of Physical Damage as LifeLeeches (4-7)% of Physical Damage as Mana
Soul Tether
Excess Life Recovery from Leech is applied to Energy Shield
Spire of Ire
Leeches (10-20)% of Physical Damage as Life
The Covenant
10% of Spell Damage Leeched as Life
The Empty Roar
Leeches 10% of Physical Damage as Life
The Last Lament
Leeches (5-10)% of Physical Damage as Life

Shattering Spite
Each explosion gains new benefits when reaching higher thresholds of Bloodstone Lances removed from an enemy, causing them to deal more damage, have increased area of effect, and Leech Life from enemies caught in the blast.
Wild Protector
The Bear Spirit leaps at enemies to Maim them, Leeches Life with its slam, and periodically roars to Intimidate enemies.

Mark of Siphoning
Supports Mark Skills, causing enemies they Mark to Leech Mana to you when you Hit them with Attacks.
Mark of Siphoning II
Supports Mark Skills, causing enemies they Mark to Leech Life and Mana to you when you Hit them with Attacks.

Bloodthirsty
10% increased Attack Speed while Leeching20% increased Damage while Leeching30% increased Armour and Evasion Rating while Leeching
Fast Metabolism
40% increased Damage while Leeching Life
Fortifying Blood
40% increased Armour and Evasion Rating while Leeching
Thirsting Ally
Leeching Life from your Hits causes your Companion to also Leech the same amount of Life
Vaal Pact
50% more amount of Life Leeched Leech Life 67% less quickly Cannot Recover Life other than from Leech Life Leech effects are not removed when Unreserved Life is Filled
Voracious
15% increased Attack Speed while Leeching

Costly Might
You are faster, leech Life from Physical Attack Damage and deal increased Physical Damage, but are taking Physical Damage over time
Costly Potency
DNT-UNUSED You are faster, DO NOT leech Life from Elemental Damage and deal increased Elemental Damage, but are taking Fire Damage over time
Vampiric Link
DNT-UNUSED You get the recovery when the link's source leeches life.