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Tenacity icon Tenacity, or Crowd Control Reduction, is a stat that reduces the duration of all incoming Stun icon crowd control status effects (disables) except Airborne icon airborne, Drowsy icon drowsy, Nearsight icon nearsight, Stasis icon stasis, and Suppression icon suppression.

Tenacity is a percentage, and it indicates by how much the disable's duration is reduced. Any disable's duration cannot be reduced below 0.3 seconds*. The disable's duration is calculated at the moment of application, and does not change during it if tenacity changes.

Tenacity can be increased (self- or ally-sourced) and decreased (enemy-sourced) from abilities, buffs, items, runes, and summoner spells.

Increasing tenacity[]

Items[]

This table is automatically generated based on the data from Module:ItemData/data.

ItemCostAmountAvailability
Mercury's Treads Mercury's Treads1100 1100 Gold30%Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Sterak's Gage Sterak's Gage3000 3000 Gold20%Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Wit's End Wit's End2800 2800 Gold20%Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid

Consumables[]

Champion abilities[]

Runes[]

Summoner Spells[]

Neutral Buffs[]

Game Modes[]

Decreasing tenacity[]

Note that tenacity can have negative values, which will cause incoming disables to last longer.

Champion Abilities[]

Items[]

  • Anathema's Chains Anathema's Chains reduces the Nemesis' tenacity by 20% while at maximum stacks of Vendetta. This stacks additively with Brittle icon Brittle for a total of -50% tenacity.

Stacking[]

The tenacity stat is built up from sub-stats that internally are referred to as "modifiers". These are referred to as groups, from A to C. Combination of effects in the same type will stack multiplicatively, while combination of multiple types will stack additively.

Tenacity is capped at 100%.

The mathematics regarding the total tenacity is as follows:

(1 - ((1 - A1)(1 - A2)(1 - ...))) + (1 - ((1 - B1)(1 - B2)(1 - ...))) + (1 - ((1 - C1)(1 - C2)(1 - ...)))

Source
Group A
Group B
Group C

For instance, a champion owns Mercury's Treads Mercury's Treads and has Legend: Tenacity Legend: Tenacity at maximum stacks, and a nearby enemy champion affects them with Brittle icon Brittle's tenacity reduction. The sum of their tenacity is calculated as follows:

  • Group A Tenacity modifiers = 30% 30% × 20% 20%
  • Group C Tenacity modifier = Brittle icon -30%
  • Final Tenacity = (1 - ((1 - Mercury's Treads item) × (1 - Legend- Tenacity rune)) Group A Tenacity modifiers + Brittle icon Group C Tenacity modifier
  • = (1 - ((1 - 0 0.3) × (1 - 0 0.2)) + Brittle icon -0.3
  • = (1 - (0.7 × 0.8)) + -0.3
  • = 0.44 + -0.3 = 14%

Trivia[]

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