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Keystone

Arcane Comet

ARCANE COMET

PhysicalMagicAdaptive

Launch a damaging comet on ability hit

Effect

Damaging a champion with an ability hurls a comet at their location. When a comet hits an enemy champion, the next comet's damage increases. Damage: 15 - 100 + (2 x total hits on enemy champions) + 10% bonus Attack Damage + 5% Ability Power. Cooldown: 16-8 seconds.

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

Support51%
Mid47%
Top2%

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 402G per match (est.), #10 of 13 keystones.

Match average

402G* est.

#10 of 13 keystones

One effect only: Hit damage (base only)

In this row

13 keystones

Empowerment891

Conqueror661

Phase Rush619

Electrocute484

Guardian465

Arcane Comet402

Aery390

Dark Harvest250

First Strike171

By level

Gold eq.
Match average 402

	Lv1	Lv5	Lv10	Lv15
Gold eq.	88	277	454	780
Damage	15	39.3	69.6	100

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.

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.

Damage valued like healing

Damage to an enemy is valued like healing yourself the same amount, priced with the health regen rate.

Ratios use a reference build

Build-dependent ratios such as 10% bonus AD are counted against a reference build (an assumption): 0 / 1 / 2 / 4 finished items at levels 1 / 5 / 10 / 15 (linear in between), each worth the median of the finished items that have that stat (AD 45 / AP 70 / health 350 / armor 40 / magic resist 40). Effects with ratios of two or more types (AD / AP / tank: health, armor, magic resist) count only the highest type (items use their own type), since four finished items can't be four of each type. In the Build Lab's combat power, the ratios use your actual build instead.

Full Calculation

Hit damage (base only) 15–14088〜780G

BasisIn-game text (captured 2026-09-23): Base 15-100 (even by level) plus 2 per comet hit. Fights match takedowns (0 / 3 / 5 / 10) with 2 hits per fight: 0 / 6 / 10 / 20 hits, so 15 / 51.3 / 89.6 / 140. Spread over the 16-8s cooldown with the Heal formula; the 10% bonus AD / 5% AP ratios counted against the reference build; only the higher of the AD-type and AP-type values is added; 50% for the on-hit trigger

115–140 ÷ 16–8s cooldown × 5 × 50% uptime = 2.34–43.75 per 5s. 2.34–43.75 ÷ median base regen 8–19 = 29–230%. 29–230 × 3G= 88–691G
2Ratio: reference build bonus AD 0–180 × 10%= 0–18
3Same formula for 0–18= 0–89G
4Ratio: reference build AP 0–280 × 5%= 0–14 (not counted: the AD type is higher)
5Total 88–691G + 0–89G= 88–780G

Match average: mean of levels 1–15 = 402G

Patch Changes

Ver. 7

7.2Changed2026-07-08

Damage: 18-95 (based on level) + 3* hit count + 35% bonus Attack Damage + 20% Ability Power → 15-100 (based on level) + 2* hit count + 10% bonus Attack Damage + 5% Ability Power

Patch notes 7.3d and earlier versions

Arcane Comet

Effect

Build Trends

Champions using it34 rows, by pick rateby win rate

Runes on the same page34 runes, by share

In streamer and pro builds24 of 409 builds (1 pro)

Champions

Fighter

Mage

Marksman

Tank

Support

Items

Physical

Magic

Defense

Support

Boots

Runes

Keystone

Domination

Precision

Resolve

Sorcery

Spells

Analysis

In this row

Patch Changes