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Keystone

Lethal Tempo

LETHAL TEMPO

Attack speed

Stack Attack Speed and bonus range

Effect

Hitting enemy champions with basic attacks grants stacking Attack Speed, up to 6 stacks. Each stack grants 8% (melee) or 6.4% (ranged) Attack Speed for 6 seconds. At max stacks, basic attacks also fire a bolt that deals 9 – 30 (melee) or 6 – 24 (ranged) adaptive damage, increased by 1% (melee) or 0.67% (ranged) per 1% bonus Attack Speed.

Build Trends

Official Tencent data (China server, Diamond+)As of 2026-11-0611/06

Champions using it34 rows, by pick rateby win rate

By lane

ADC64%
Top18%
Jungle14%
Mid4%

SortFaded rows: pick rate under 2%

Only the top rune pages Tencent publishes are counted, so the pick rate reads lower than actual and win rates and shares lean toward the top. Streamer and pro builds are the 409 Chinese builds published by Tencent (excluding those with removed items).

How it is calculated

Pick rate is the sum over champions and lanes, and win rate is the average weighted by it. The lane breakdown and "Runes on the same page" are shares of that sum. Match counts are not published, so every champion is weighted equally.

Analysis

Gold equivalent

Gold equivalent is 650G per match (est.), #4 of 13 keystones.

Match average

650G* est.

#4 of 13 keystones

Attack speed 83%Max-stack bolt damage 17%

In this row

13 keystones

Empowerment891

Ice Overlord766

Conqueror661

Lethal Tempo650

Phase Rush619

Grasp of Undying565

Fleet Footwork542

Electrocute484

Guardian465

Arcane Comet402

Aery390

Dark Harvest250

First Strike171

By level

Gold eq.
Match average 650

	Lv1	Lv5	Lv10	Lv15
Gold eq.	628	646	657	663
Bolt Damage (Melee)	9	15	22.5	30
Bolt Damage (Ranged)	6	10	15	20

Effect values split the description range evenly by level

Assumptions Behind This ValueTap for details

Combat only: 50%

Effects that only work in combat or under a condition are counted as active half the time. The same rule applies to every rune and spell.

Melee/ranged average

Effects that differ for melee and ranged champions use the average of the two, since no specific champion is assumed.

At most once per 8s

Effects that re-trigger on attacks are counted at most once every 8 seconds, since a single fight only allows so many procs.

Full Calculation

Attack speed540G

BasisIn-game text (captured 2026-09-23): average of 6% melee and 4.8% ranged per stack = 5.4%, 6 stacks max; only in combat, so 50%

15.4% × 33.33G × 6 stacks × 50%= 540G

Max-stack bolt damage 7.5–2588〜123G

BasisIn-game text (captured 2026-09-23): at max stacks, basic attacks fire a bolt: average of 9–30 melee and 6–20 ranged = 7.5–25. Re-triggers on attacks, so at most once per 8s; combat only, so 50%. The bonus-attack-speed scaling is a ratio and isn't counted

17.5–25 ÷ 8s interval × 5 × 50% uptime = 2.34–7.81 per 5s. 2.34–7.81 ÷ median base regen 8–19 = 29–41%. 29–41 × 3G= 88–123G

Total 628–663G (level 1–15)
Match average: mean of levels 1–15 = 650G

Patch Changes

Ver. 7

History7.1dChanged7.2Changed7.3Changed

7.3Changed2026-09-22

Landing basic attacks on enemy champions grants stacking Attack Speed, 8% for melee and 6.4% for ranged, up to 6 stacks for 6 seconds. At max stacks, attacks also fire a bullet that deals adaptive damage, 9 - 30 for melee and 6 - 24 for ranged. Each 1% bonus Attack Speed increases this damage by 1% for melee and 0.67% for ranged.

7.2Changed2026-07-08

Melee Attack Speed: 8%–16% (based on level) → 6%–14% (based on level)
Ranged Attack Speed: 3%–10% (based on level) → 3.5%–8% (based on level)
Attack Range: 50 (melee) / 75 (ranged) → 25 (melee) / 50 (ranged)

7.1dChanged2026-04-28

Attack Speed per stack (ranged): 3% – 12% (based on level) → 3% – 10% (based on level)

Patch notes 7.3d and earlier versions

Lethal Tempo

Effect

Build Trends

Champions using it34 rows, by pick rateby win rate

Runes on the same page26 runes, by share

In streamer and pro builds54 of 409 builds (9 pro)

Champions

Fighter

Mage

Marksman

Assassin

Items

Physical

Magic

Defense

Boots

Runes

Keystone

Domination

Precision

Resolve

Sorcery

Spells

Analysis

In this row

Patch Changes