In The Forbidden Sanctum expansion, we've introduced several new gems and made some changes to existing ones. As usual, we've prepared the gem data at level 20 with 20% quality for all new and changed gems to help you theorycraft your builds for the upcoming launch.

Below are all the new and changed gems in Path of Exile: The Forbidden Sanctum. We can't wait to see what you come up with!

New Gems

 
 
 
 
 
 
 
 
 
 
 
 
 

 

Updated Gems

 
 
 

Vaal Ancestral Warchief


Added
  • Modifiers to Totem Duration also apply to this Skill's Soul Gain Prevention
 

Vaal Lightning Strike


Removed
  • 20% increased Damage
 
 

Battlemage's Cry


Modified
  • New: Warcry, Critical, Trigger, AoE, Duration
  • Old: Warcry, Critical, AoE, Duration

 

Molten Strike


Added
  • Projectiles deal 50% less Damage with Hits and Ailments
 
Removed
  • Projectiles deal 50% less Damage
  • Damage Over Time caused by Projectiles deals 50% less Damage
 
 

Punishment


Removed
  • Curse gains 10 Doom per second if you Cast this Spell yourself
  • 10% of Overkill Damage from Killing Blows on Cursed Enemies is Reflected to other Enemies as Physical Damage
 
Modified
  • New: Spell, AoE, Duration, Curse, Hex
  • Old: Spell, AoE, Duration, Curse, Physical, Hex
  • New: Base duration is 11.80 seconds
  • Old: Base duration is 10.90 seconds
  • New: Cursed Enemies take 58% increased Damage while on Low Life
  • Old: Cursed Enemies take 78% increased Damage while on Low Life
 

New: Curses all targets in an area, causing them to be debilitated when they hit enemies and increasing damage they take while on low life.

Old: Curses all targets in an area, causing them to be debilitated when they hit enemies and increasing damage they take while on low life. Some overkill damage from a killing blow on a cursed enemy will be reflected to surrounding targets.

 

Smite


Added
  • Lightning strikes 1 target
 

New: Performs a melee attack, and causes lightning to strike a targeted location or nearby enemy, dealing damage in an area. Each target can only be hit once by this skill. Hitting an enemy grants an aura, giving you and your allies additional lightning damage for a duration. Requires a Sword, Axe, Mace, Sceptre, Staff or Unarmed.

Old: Performs a melee attack, and causes lightning to strike a targeted location or nearby enemy, dealing damage in an area. If the melee strike hits a target, that enemy cannot also be hit by the area damage. If this skill hits an enemy, you gain an aura buff, granting you and your allies additional lightning damage for a duration. Requires a Sword, Axe, Mace, Sceptre, Staff or Unarmed.

 
 

Vulnerability


Added
  • 10% increased Duration of Bleeding on Cursed Enemies
 
Removed
  • Curse gains 10 Doom per second if you Cast this Spell yourself
  • Ailments inflicted on Cursed Enemies deal Damage 20% Faster
 
Modified
  • New: Base duration is 11.80 seconds
  • Old: Base duration is 10.90 seconds
  • New: Cursed enemies take 30% increased Physical Damage
  • Old: Cursed enemies take 39% increased Physical Damage
  • New: Attacks Hits against Cursed Enemies have 25% chance to inflict Bleeding
  • Old: Attacks Hits against Cursed Enemies have 30% chance to inflict Bleeding
 

New: Curse all targets in an area, causing them to take increased physical damage. Attacks against the cursed enemies have a chance to inflict bleeding.

Old: Curse all targets in an area, causing them to take increased physical damage. Attacks against the cursed enemies have a chance to inflict bleeding, and ailments inflicted on them will deal damage faster.

 
 

 

Frost Blades


Removed
  • 20% increased Damage
 
Modified
  • New: Attack Damage 225% of base
  • Old: Attack Damage 175% of base
  • New: Effectiveness of Added Damage 225%
  • Old: Effectiveness of Added Damage 175%
  • New: 20% increased Projectile Speed
  • Old: 39% increased Projectile Speed
 
 

Lightning Strike


Removed
  • 20% increased Damage
 
Modified
  • New: Fires 2 additional Projectiles
  • Old: Fires 7 additional Projectiles
 

Spectral Helix


Modified
  • New: Attack Damage 150% of base
  • Old: Attack Damage 250% of base
  • New: Effectiveness of Added Damage 150%
  • Old: Effectiveness of Added Damage 250%
 

Temporal Chains


Added
  • 20% increased Curse Duration
 
Removed
  • Curse gains 10 Doom per second if you Cast this Spell yourself
  • 10% increased Effect of Curse
 
Modified
  • New: Base duration is 8.80 seconds
  • Old: Base duration is 5.95 seconds
  • New: Cursed Rare and Unique Enemies have 18% less Action Speed
  • Old: Cursed Rare and Unique Enemies have 14% less Action Speed
 

Venom Gyre


Added
  • Returning Projectiles deal 75% less Damage with Hits and Ailments
  • Maximum 30 caught Projectiles
  • 40% chance to keep each caught Projectile fired with Whirling Blades
 
Removed
  • Returning Projectiles deal 75% less Damage
  • Can catch up to 30 Returning Projectiles
  • 40% chance to keep caught Projectiles when firing them by using Whirling Blades
 
Modified
  • New: Attack, Projectile, Chaos, Duration
  • Old: Attack, Projectile, Chaos
 

Withering Step


Added
  • Cannot be Cast or Triggered while Elusive
    Grants Elusive

Removed
  • Removes existing Elusive before granting a new Elusive Buff when used

New: Grants Elusive and a buff that grants Phasing. While you have this buff, monsters that enter an area around you will be Withered. Using a skill or losing the Elusive buff ends this skill's effects. Shares a cooldown with other Blink skills. Cannot be used while already Elusive.

Old: Removes any existing Elusive buff before applying both Elusive and a buff that grants Phasing. While you have this buff, monsters that enter an area around you will be Withered. Using a skill or losing the Elusive buff ends this skill's effects. Shares a cooldown with other Blink skills.

 

Bane


Added
  • Applied Curses have 25% less Effect
 
 

Conductivity


Removed
  • Curse gains 10 Doom per second if you Cast this Spell yourself
 
Modified
  • New: Base duration is 11.80 seconds
  • Old: Base duration is 10.90 seconds
  • New: Cursed enemies have -36% to Lightning Resistance
  • Old: Cursed enemies have -44% to Lightning Resistance
 

Despair


Added
  • 10% increased Effect of Curse
 
Removed
  • Curse gains 10 Doom per second if you Cast this Spell yourself
  • Cursed enemies take 35% increased Damage from Damage Over Time effects
  • Adds 46 to 57 Chaos Damage to Hits against Cursed Enemies
 
Modified
  • New: Base duration is 11.80 seconds
  • Old: Base duration is 10.90 seconds
  • New: Cursed enemies have -30% to Chaos Resistance
  • Old: Cursed enemies have -29% to Chaos Resistance

New: Curses all targets in an area, lowering their chaos resistance.

Old: Curses all targets in an area, lowering their chaos resistance and increasing damage over time they take. All hits will deal added chaos damage to the cursed enemies.

 

Elemental Weakness


Added
  • 10% increased Effect of Curse

Removed
  • Curse gains 10 Doom per second if you Cast this Spell yourself
 
Modified
  • New: Base duration is 11.80 seconds
  • Old: Base duration is 10.90 seconds
  • New: Cursed enemies have -30% to Elemental Resistances
  • Old: Cursed enemies have -44% to Elemental Resistances
 

Enfeeble


Added
  • 20% increased Curse Duration
 

Removed
  • Curse gains 10 Doom per second if you Cast this Spell yourself
  • 10% increased Effect of Curse
 
Modified
  • New: Base duration is 11.80 seconds
  • Old: Base duration is 10.90 seconds
  • New: Cursed Normal or Magic enemies deal 29% less Damage
  • Old: Cursed Normal or Magic enemies deal 30% less Damage
  • New: Cursed Rare or Unique enemies deal 18% less Damage
  • Old: Cursed Rare or Unique enemies deal 15% less Damage
 

Flammability


Removed
  • Curse gains 10 Doom per second if you Cast this Spell yourself
 
Modified
  • New: Base duration is 11.80 seconds
  • Old: Base duration is 10.90 seconds
  • New: Cursed enemies have -36% to Fire Resistance
  • Old: Cursed enemies have -44% to Fire Resistance
 

Frostbite


Removed
  • Curse gains 10 Doom per second if you Cast this Spell yourself

Modified
  • New: Base duration is 11.80 seconds
  • Old: Base duration is 10.90 seconds
  • New: Cursed enemies have -36% to Cold Resistance
  • Old: Cursed enemies have -44% to Cold Resistance
 

Hexblast


Added
  • This Spell's Cast Time is added to its Cooldown if Triggered
  • All Damage can Ignite, Freeze, and Shock
  • 40% more Damage with Ailments if Enemy is Hexed
  • 100% more Damage with Hits if Enemy is Hexed
    Removes a Hex after Damaging

Removed
  • All Damage can Shock
  • All Damage can Ignite
  • All Damage can Freeze
  • 15% more Damage with Ailments per 5 Doom on Hex with most Doom
  • 40% more Damage with Hits per 5 Doom on Hex with most Doom
    Removes Hex with most Doom after Damaging

Modified
  • New: Cost 30 Mana
  • Old: Cost 20 Mana
  • New: Cast Time 1.00 sec
  • Old: Cast Time 0.60 sec
  • New: Effectiveness of Added Damage 340%
  • Old: Effectiveness of Added Damage 310%
  • New: Deals 1514 to 2271 Chaos Damage
  • Old: Deals 1397 to 2096 Chaos Damage

New: Deals chaos damage to a single enemy, dealing more damage if they are Hexed, then removing the Hex. If the enemy was Hexed, also deals area damage to other enemies around the target, boosting damage and removing Hexes from those enemies in the same way.

Old: Deals chaos damage to a single enemy, dealing more damage if they are Hexed, then removes the Hex with the highest Doom. If a Hex was removed this way, also deals area damage to other enemies around the target, boosting damage and removing Hexes from those enemies in the same way.

 

Lightning Conduit


Modified
  • New: Effectiveness of Added Damage 140%
  • Old: Effectiveness of Added Damage 190%
  • New: Deals 387 to 1161 Lightning Damage
  • Old: Deals 516 to 1548 Lightning Damage
 

Orb of Storms


Added
  • Strikes every 0.50 seconds while Channelling a Lightning Skill near the Orb
 

Shockwave Support


New: Supports melee attack skills. Cannot support triggered attacks, attacks used by things other than you, or skills which create minions.

Old: Supports melee attack skills. Cannot support Triggered attacks, skills used by Totems, or skills which create minions.

 

Blasphemy Support


Added
  • Supported Curse Skills apply their Curses as Auras
    Supported Curse Skills also count as Aura Skills
  • 25% less Effect of Supported Curses
 
Removed
  • Supported Skills apply their Curse as Auras
    Supported Curse Skills also count as Aura Skills
    Hexes from Supported Skills do not gain Doom over time
  • 10% increased Effect of Supported Curses

Modified
  • New: 96% increased Area of Effect of Supported Curse Skills
  • Old: 76% increased Area of Effect of Supported Curse Skills
 

Hextouch Support


Added
  • 35% less Effect of Supported Curses
 
Removed
  • 10% increased Effect of Supported Curses

Modified
  • New: Supported Skills have 21% reduced Curse Duration
  • Old: Supported Skills have 12% reduced Curse Duration
 

Impending Doom Support


Removed
  • 15% more Damage with Ailments per 5 Doom on Hex
  • 40% more Damage with Hits per 5 Doom on Hex
 
Modified
  • New: Effectiveness of Added Damage 370%
  • Old: Effectiveness of Added Damage 200%
  • New: Deals 1654 to 2481 Chaos Damage
  • Old: Deals 868 to 1301 Chaos Damage

New: Deals chaos damage in an area.

Old: Deals chaos damage in an area based on the amount of Doom on the triggering Hex.

 

Pinpoint Support


Added
  • Projectiles from Supported Skills deal 20% more Damage with Hits per Intensity

Removed
  • Supported Skills deal 20% more Projectile Damage with Hits per Intensity
 

Predator Support


Added
  • Minions from Supported Skills deal 24% more Damage to the Prey with Hits and Ailments
 
Removed
  • Minions from Supported Skills deal 24% more Damage to the Prey
 

Awakened Blasphemy Support


Added
  • Supported Curse Skills apply their Curses as Auras
    Supported Curse Skills also count as Aura Skills
  • 25% less Effect of Supported Curses

Removed
  • Supported Skills apply their Curse as Auras
    Supported Curse Skills also count as Aura Skills
    Hexes from Supported Skills do not gain Doom over time
  • 10% increased Effect of Supported Curses
 

Modified
  • New: 108% increased Area of Effect of Supported Curse Skills
  • Old: 88% increased Area of Effect of Supported Curse Skills
 

Awakened Hextouch Support


Added
  • 35% less Effect of Supported Curses

Removed
  • 10% increased Effect of Supported Curses

Modified
  • New: Supported Skills have 16% reduced Curse Duration
  • Old: Supported Skills have 2% reduced Curse Duration