Vulnerability

Per level³

• Pair Vulnerability with Reaper's Toll and a critical damage shard, and take Prismatic Stat Anvil on round 8.⁴
• For a crit build, reach over 100% critical strike chance through the core build or shards, then use situational damage or defensive items and buy anvils. Shardblade is a higher-risk, higher-reward option; the build can work on ADCs, Yasuo, Yone and Thresh, and with the right setup on mages that can spam skills and proc Rite of Ruin consistently.⁵
• With Vulnerability and Magic Missile on Elise, use W to stack Detonation Orb and Magic Missile, then repeatedly cast Q for percent-health damage.⁶

• Certain non-damage-over-time abilities can benefit from Vulnerability. On those abilities, Vulnerability stacks multiplicatively with Jeweled Gauntlet; on damage-over-time abilities, only one of the two augments takes effect.⁷ Patch unknown
• When Vulnerability and Jeweled Gauntlet are equipped together, only the augment with higher critical damage supplies the critical strike chance; if their critical damage is equal, either augment can supply it.² Patch unknown
• Malzahar's ultimate and E can critically strike with both Vulnerability and Jeweled Gauntlet.⁸⁹
• With Vulnerability and 100% critical strike chance, critical strikes with Heartsteel increase stacks gained; adding Sword of the Divine can increase the stacks further.¹⁰
• Smolder's Q can deal damage over time that benefits from Vulnerability; the damage depends on his stacks, items and augments.¹¹¹²
• Vulnerability can increase Reaper's Toll damage.¹³
• Vulnerability can make damage from Void Immolation critically strike.¹⁴
• Vulnerability can affect passive damage such as Teemo's E, Twitch's passive and Brand's passive, as well as active casts such as Teemo's ultimate and Malzahar's E and ultimate.¹⁵
• Katarina's ultimate is damage over time that can benefit from Vulnerability and its on-hit effects.¹⁶
• Miss Fortune's and Lucian's ultimates can deal damage over time that critically strikes with Vulnerability.¹⁶
• With Vulnerability, the initial damage from Smolder's Q does not critically strike, but its damage-over-time effect can.¹⁷
• Unending Despair damage can critically strike with Vulnerability.¹⁸

• Hamstringer's burn stacks sometimes fail to apply with Vulnerability, and spell critical strikes sometimes do not work as expected with the two augments.¹⁹
• Sword of the Divine's bonus damage does not appear in its damage tooltip when critical strikes come from Jeweled Gauntlet or Vulnerability; its bonus is added to those augments' damage tooltips.²⁰

• Since patch 26.14, Double Tap has a 5-second-per-spell cooldown and Critical Rhythm has a 4-second-per-spell cooldown when interacting with Vulnerability and Jeweled Gauntlet.²¹
• Since patch 26.14, having both Vulnerability and Jeweled Gauntlet no longer sometimes prevents a spell from critically striking.²¹
• Sword of the Divine no longer works with Vulnerability.²²

Earlier formats

• In patch 25.08, Jeweled Gauntlet and Vulnerability stopped stacking critical damage, and abilities that can critically strike with Vulnerability but not Jeweled Gauntlet stopped losing their critical strikes when both augments were equipped.²³ 8x2 duos
• In patch 25.07, the critical damage formula for Jeweled Gauntlet and Vulnerability was adjusted.²⁴ 8x2 duos
• In patch 25.07, abilities that roll to determine whether they critically strike stopped rolling a second time for Jeweled Gauntlet or Vulnerability, and Soul Siphon stopped triggering multiple times when both augments were equipped.²⁵²⁶ 8x2 duos
• In patch 14.18, Vulnerability stopped causing Hamstringer and Death's Dance to repeatedly trigger themselves.²⁷ 8x2 duos
• In patch 14.16, Hamstringer's damage-over-time effect could critically strike and stopped creating an infinite loop with Vulnerability.²⁸ 8x2 duos
• In patch 14.13, a tooltip issue with Vulnerability was fixed.²⁹ 8x2 duos
• Passives that deal extra magic damage on hit, such as Kha'Zix's and Zed's passives, can critically strike with Vulnerability.³⁰ 8x2 duos
• Gunblade's active can critically strike with Vulnerability.³¹ 8x2 duos
• Kinkou Jitte's damage can be increased by Vulnerability.³² 8x2 duos
• Vulnerability can cause Akali to deal critical damage without damage-over-time abilities or items that cause damage over time.³³ 8x2 duos
• Vulnerability can cause Zoe to deal critical damage with Sword of the Divine.³⁴ 8x2 duos
• Vulnerability can cause spells and augments to critically strike unexpectedly.³⁵³⁶ 8x2 duos
• Vulnerability can cause Fiora's passive to critically strike unexpectedly.³⁷ 8x2 duos
• With Vulnerability, Reverberation can support a tanky on-hit Maokai build with items such as Titanic and Blade of the Ruined King.³⁸ 8x2 duos
• Reaper's Toll could benefit from Vulnerability's critical effect.³⁹ 8x2 duos
• Vulnerability with Ethereal Weapon let Gangplank's spells apply his passive, which could critically strike for true damage; barrels could refresh the passive.⁴⁰ 8x2 duos
• Vulnerability with Mystic Punch, Reverberation and Reaper's Toll on Briar could deal heavy damage with Q.⁴¹ 8x2 duos
• Bolt, Sharpshooter, Firmament, The Bomb and Call Lightning damage was correctly tagged as item damage for effects such as Vulnerability.^4243444546 8x2 duos
• Scour's damage-over-time effect with Hamstringer and Vulnerability no longer caused an infinite application loop of both effects.⁴⁷ 8x2 duos
• Vulnerability was good on every archetype, including ADCs, tanks using Sunfire, and mages using Liandry's or Luden's.⁴⁸ 8x2 duos
• Katarina's ultimate was damage over time that could benefit from Vulnerability and its on-hit effects.⁴⁹ 8x2 duos
• Ahri's W gave Vulnerability value immediately, and its scaling could become strong after one round with an item for Apex Inventory.⁵⁰ 8x2 duos
• Vulnerability with Hamstringer was an easy combo to win with Zeri, and kiting helped.⁵¹ 8x2 duos
• Vulnerability could roll critical strikes on all damage output, including item and augment damage.⁵² 8x2 duos