Tenacity (or Crowd Control Reduction) is a stat that reduces the duration of all incoming crowd control effects except suppression, nearsight, stasis, and displacements. The stat is the percentage by which the duration is reduced. This reduction is limited, the duration can never drop below 0.5 seconds. The duration of the crowd control is calculated at the time of application and does not change if the tenacity changes.
These are the combinations that stack additively:
- Brittle and / with
All the other combinations stack multiplicatively.
Tenacity can be reduced to negative values, causing crowd control to last longer.
- Until patch V184.108.40.206, Tenacity was an unnamed effect unique to . That patch promoted the effect to a champion statistic and added three new items: (later removed), (later removed) and . Tenacity from multiple sources did not stack, similar to Enhanced Movement. In Season Three there was an item overhaul, named item effects were introduced, and Tenacity was reverted to an item effect. In V3.01, all sources of crowd control reduction were changed to say "Tenacity" and Tenacity was reintroduced as a champion statistic.
- Until Season Three, Tenacity's in-game icon was the same as the icon used for V3.01, it shared the same icon as the Tenacious mastery. As of V3.01, it no longer has an icon in the buff bar. and passive. Between the introduction of season 3 changes and
Last updated: November 20, 2019, patch V9.23
- The biggest amount of Tenacity you can obtain is 98.652% with
- + (+75% tenacity)
- + (+45% tenacity)
- (+30% tenacity)
- + (+60% tenacity)
- (+65% tenacity)
- 1 - ((1 - ( + )) × (1 - ( + )) × (1 - ) × (1 - ( + )) × (1 - ) =
- 1 - ( × × × × ) = 98.652%
- With this amount of tenacity,
( ) would only last 0.067 seconds. The minimum crowd control duration prevents this.
- In comparison, Brittled. would last 6.5 seconds if the target has no tenacity and is
- Note that this amount of tenacity can only be achieved briefly with wearing off almost immediately, and with and which grant a temporary buff.
- With the Ultra Rapid Fire buff enabled, the maximum tenacity achievable is 98.989%.
- 1 - ( × × × × × ) = 98.989%