What is Tenacity in League of Legends?

Ever been stuck in place, unable to fight back when it mattered most? Those nasty crowd control (CC) effects like stuns, roots, and slows can halt your every move. Fortunately, there’s a stat that can help reduce their impact: Tenacity.

Tenacity shortens the duration of most CC effects, allowing you to maintain mobility and reaction time during crucial fights. However, it’s important to note that certain CC types—like airborne and suppression—are immune to Tenacity and always last their full duration.

How to Calculate Tenacity

Tenacity is expressed as a percentage and can be obtained through items, runes, and champion abilities. The higher the Tenacity, the less time you’ll spend helpless against enemy CC.

The formula for calculating total Tenacity is:

1 - ((1 - CC Reduction from Items/Runes) * (1 - CC Reduction from Abilities))

Example:

Garen’s Courage (W): 60% Tenacity
Legend: Tenacity Rune (fully stacked): 30% Tenacity
Mercury’s Treads: 20% Tenacity

Plugging these values in:

1 - ((1 - 0.20) * (1 - 0.30) * (1 - 0.60))

= 1 - (0.80 * 0.70 * 0.40)

= 1 - 0.224

= 0.776 or 77.6% Tenacity

With 77.6% Tenacity, CC effects are significantly shortened, keeping you more active in fights.

Sources of Tenacity in LoL

Abilities:

Garen’s Courage (W): Up to 60% Tenacity for 6 seconds.
Olaf’s Ragnarok (R): Grants CC immunity (except suppression).
Milio’s Breath of Life (R): Cleanses and grants 65% Tenacity for 3 seconds to nearby allies.
Gangplank’s Remove Scurvy (W): Instantly cleanses all CC effects.

Items:

Elixir of Iron: +25% Tenacity temporarily.
Mercury’s Treads: +30% Tenacity permanently.
Sterak’s Gage: +30% Tenacity for 8s when Lifeline triggers.
Silvermere Dawn: +35% Tenacity and slow resistance for 3s after active use.
Iceborn Gauntlet: Grants +5% Tenacity per legendary item due to its mythic passive.
Quicksilver Sash: Removes all CC and grants bonus MR.
Mikael’s Crucible: Cleanses CC from an ally and heals them.

Runes:

Legend: Tenacity: Up to 30% Tenacity at 6 stacks.
Unflinching: 10% Tenacity and slow resistance, plus an extra 20% for 2s after casting a summoner spell.

Final Thoughts

Tenacity can be the deciding factor in surviving critical engagements and outplaying enemy teams. By stacking Tenacity through items, runes, and abilities, you’ll minimize the time you’re locked down and maximize your gameplay impact.

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