Kayn ARAM Mayhem Build

The Shadow Reaper. A strong pick in ARAM Mayhem on patch 26.21: #20 of 173 champions.

APatch 26.21FighterAssassinNo runes in Mayhem

Tier: A
Win rate: 53.1%
Pick rate: 7.8%
Rank: #20 of 173
Games: 1,806,222
Patch: 26.21

How to play Kayn in ARAM Mayhem

Kayn is a strong pick in ARAM Mayhem on patch 26.21: tier A, #20 of 173 champions, with a 53.1% win rate over 1,806,222 games. Riot rates it 8/10 for difficulty, so give it a few games before you judge it.

90% of Kayn's damage to champions is physical, so enemy armor is what slows it down. It deals 45,845 damage to champions in an average game, more than most champions, so play to stay alive and keep hitting. It dies 13.6 times per game on average: it trades its life for impact, so time your engages with your team.

The Lethality build, lethality items for burst, is both the most played and the top-ranked path: Hubris, Axiom Arc and Death's Dance, with a 54.7% win rate over 879,297 games. On this build 48% of players skip boots and spend the slot on another item.

The cards that do best on Kayn are Mad Scientist, Hand of Baron and Weapon of Destiny. Cards built around movement speed fill most of the top of its list, followed by ability haste. Skip Fey Magic and Juiced when you can: they do worst on Kayn. A pair to look for: Mad Scientist with Weapon of Destiny.

Take Flash and Mark (97% of players). Max Q (Reaping Slash) first, then W, then E.

Kayn ARAM Mayhem build

ARAMKit groups every Kayn game by build path. The top-ranked path comes first, with the items most players start with, buy first and add later.

Lethality build · top ranked

54.7% win rate · 57% of Kayn games · 879,297 games

Start

Long Sword
Guardian's Blade

Core items, in buying order

Hubris
Axiom Arc
Death's Dance

Boots on the Lethality build for Kayn, top ranked first, with the share of players who buy them
Boots, best first	Players
Gluttonous Greaves	23%
No boots	48%
Mercury's Treads	23%

Situational, after the core

Lord Dominik's Regards15% buy it
Serylda's Grudge7% buy it
Endless Hunger38% buy it
Voltaic Cyclosword7% buy it
Infinity Edge3% buy it
Spear of Shojin11% buy it

Other build paths

Other Kayn build paths with share of games, win rate and core items
Path	Core items	Games	Win rate
BruiserHubris, Death's Dance, Endless Hunger		19.7%	55.0%
CritHubris, Infinity Edge, Lord Dominik's Regards		2.9%	54.4%

Games: the share of all Kayn games that went this way.

Most bought items

Hubris88% of games
Death's Dance64% of games
Axiom Arc50% of games
Endless Hunger36% of games
The Collector35% of games
Gluttonous Greaves20% of games
Mercury's Treads20% of games
Voltaic Cyclosword17% of games
Eclipse16% of games
Lord Dominik's Regards15% of games

Best augments for Kayn

Every card with enough Kayn games, by tier and best first within each tier. Tiers are Kayn's own: a card can be S tier here and C tier on another champion. As Riot's policy asks, cards are shown by tier and order only, never with a win rate. Click a card for its own page; the augment tier list ranks them over all champions.

PrismaticBest prismatic cards

GoldBest gold cards

SilverBest silver cards

S- and A-tier cards for Kayn

11 S tier and 26 A tier, best first.

The S- and A-tier augments for Kayn in ARAM Mayhem, best first, with their rarity and what they do
Augment	Rarity	Tier	What it does
Mad Scientist	Prismatic	Tier S	On each Revive, you grow large (gaining 30% Adaptive Force and 20% Health) or tiny (gaining 70 Ability Haste and 40% Movement Speed).
Hand of Baron	Prismatic	Tier S	Gain 25% Adaptive Force. Nearby allied minions are greatly empowered.
Weapon of Destiny	Gold	Tier S	Your first Legendary Item becomes the Weapon of Destiny. When a champion you damaged within the last 3 seconds dies, increase the Weapon of…
Giant Slayer	Prismatic	Tier S	Become tiny, gain 20% Movement Speed, and deal between 10% and 30% bonus damage to champions based on how much larger they are than you.
Tooth Fairy	Gold	Tier S	When you deal more than 25% of an enemy champion's Health in less than 2.5 seconds, they drop a Tooth. 4 seconds cooldown per target
Earthwake	Prismatic	Tier S	Your dash, leap, blink, or teleport Abilities leave behind a trail that detonates after 1 second, dealing (90–250 (by level) +60% Ability…
Blunt Force	Silver	Tier S	–
Spin To Win	Silver	Tier S	Your spin Abilities gain 30 Ability Haste and deal 30% more damage, increase to 50% for Ultimates
Swift and Safe	Silver	Tier S	Gain a (65–290 (by level) +26% Ability Power +65% Bonus Attack Damage) Shield for 2 seconds after a Dash or Blink (5 seconds Cooldown).
Escape Plan	Silver	Tier S	Gain a massive (65% Max Health) decaying Shield, decaying 150% Movement Speed, and a decaying shrink effect upon reaching 35% Health (75…
Shadow Runner	Silver	Tier S	After using a Dash, Blink, or Teleport Ability or exiting Stealth, gain 300 Movement Speed for 2 seconds.
Omni Soul	Prismatic	Tier A	Gain 3 random Dragon Souls.
Blue Barrier	Silver	Tier A	Gain 200–450 (by level) % of the Max Mana Mana you spend as a Shield for 1.5 seconds. Shields up to 300–800 (by level)
Outlaw's Grit	Gold	Tier A	After using a Dash, Blink, or Teleport Ability you gain 12 Armor and Magic Resist up to 60 at 5 stacks. Resets every 15 seconds.
Back To Basics	Prismatic	Tier A	Your Ultimate Ability is sealed. Gain 35% Ability Damage, Healing, Shielding, and 70 Ability Haste.
Clown College	Prismatic	Tier A	Backstab: You deal (20–35 (by level) +35% Ability Power +50% Bonus Attack Damage) bonus physical damage when striking from behind. Deceive…
With Haste	Gold	Tier A	Gain (70% Ability Haste) Move Speed.
Infinite Recursion	Prismatic	Tier A	Gain 60 Ability Haste, plus 3 Ability Haste per takedown.
Take'em Down Down Down	Gold	Tier A	Attacks and Abilities apply a stack to enemy champions for 5 seconds and deal Melee (5–30 (by level) +35% Bonus Attack Damage+15% Ability…
Heavy Is The Crown	Gold	Tier A	Gain 10 Attack Damage, 25 Ability Power, and increase your Bonus Attack Damage, Bonus Ability Power, and Total Attack Speed by 10%. Decrease…
Donation	Gold	Tier A	Receive 1750 Gold. Thanks chat!:)
Dashing	Prismatic	Tier A	Your dash, leap, blink, or teleport Abilities gain 175 Ability Haste.
Goliath	Prismatic	Tier A	Become large, gaining 35% Health and 15% Adaptive Force.
From Beginning To End	Gold	Tier A	Gain the First Strike and Dark Harvest Keystone Runes. First Strike: When you initiate champion combat, deal 10% extra damage for 3 seconds…
Biggest Snowball Ever	Prismatic	Tier A	Gain 100 Ability Haste on Snowball. Your snowball is BIG and will pass through minions. It Slows enemies for 20% for 2 seconds, Knocks Up…
Stats on Stats!	Gold	Tier A	Gain 3 Stat Anvils, with a higher chance of Gold and Prismatic Anvils!
The Boom and the Bass	Gold	Tier A	After casting an Ability, your next Attack within 6 seconds is faster, deals Melee (50–200 (by level) +50% Bonus Attack Damage+30% Ability…
Jeweled Gauntlet	Prismatic	Tier A	Your Abilities can Critically Strike for 45% increased damage. Gain Critical Strike Chance (25%+4.5% Ability Power) Crit Chance.
FireFox	Silver	Tier A	Autocast: Gain 25% movement speed and conjure three flames that orbit you every 9 seconds, targetting the closest visible enemy in range and…
Stats on Stats on Stats!	Prismatic	Tier A	Gain 4 Stat Anvils, with a higher chance of Gold and Prismatic Anvils! On your next Augment selection, gain one additional reroll per slot.
Transmute: Prismatic	Gold	Tier A	Gain a random Augment Tier Prismatic Augment.
Leg Day	Silver	Tier A	Gain 50 Movement Speed and 50% Slow Resist.
Ultra Hydra	Prismatic	Tier A	Gain a Tiamat when completing a Hydra Item. QUEST: Possess Titanic Hydra, Ravenous Hydra and Profane Hydra. REWARD: Get Ultra Hydra.
Transmute: Chaos	Prismatic	Tier A	Gain 2 random Augment Tier Augments.
En Passant	Prismatic	Tier A	Periodically identify Vitals on enemy champions. Hitting Vitals with Attacks or Abilities deals an additional 6% + 1.5% per stack max Health…
Prom Queen	Prismatic	Tier A	Every 35 seconds, Autocast a sparkly tiara descends upon you. When it lands, gain Rakan's Ultimate, charming enemies you touch.
Shrink Engine	Gold	Tier A	Takedowns grant a stack that makes you 4% smaller, grants 8 Ability Haste, and 1% Movement Speed. Lose 65% stacks on death…

Average on Kayn
44 cards, best first

Below average on Kayn
28 cards, best first

Weakest on Kayn
9 cards, best first

Best first augment for Kayn

Your first card decides the early fights, and a card that is great as a first pick can be a weak fourth. ARAMKit ranks Kayn's cards for each pick on its own; these are the top five per pick, with their tier in that pick. For the first pick, Mad Scientist, Weapon of Destiny and Tooth Fairy come out on top.

The best augments for Kayn in each pick of an ARAM Mayhem game, best first, with their tier in that pick
#	First pick	Second pick	Third pick	Fourth pick
1	Mad ScientistTier S	Bread And ButterTier S	Hand of BaronTier S	Hand of BaronTier S
2	Weapon of DestinyTier S	Mad ScientistTier S	Mad ScientistTier S	Mad ScientistTier S
3	Tooth FairyTier S	Bread And JamTier S	Giant SlayerTier S	Giant SlayerTier S
4	EarthwakeTier S	Weapon of DestinyTier S	EarthwakeTier S	With HasteTier S
5	Giant SlayerTier S	Giant SlayerTier S	Blue BarrierTier S	Shadow RunnerTier S

Strong card pairs

Two cards that do especially well together on Kayn, best pair first.

Summoner spells and skill order

Summoner spells

Flash + Mark97% of players · 53.2% win rate
Flash + Ghost3% of players · 50.4% win rate
Ghost + Mark0% of players · 50.9% win rate

Skill order

QReaping Slash
WBlade's Reach
EShadow Step

Max Q first. 89% of players use this order (54.4% win rate); put points in R whenever you can.

Kayn in an average Mayhem game

Averages per game over every game on this patch.

K / D / A: 13.0 / 13.6 / 19.9
KDA: 2.58
Damage to champions: 45,845
Damage taken: 44,370
Self-mitigated: 44,715
Healing on allies: 0
Shielding on allies: 0
Crowd control: 22 s
Kill participation: 59%
Game length: 16:41

Damage type

Physical 90%Magic 4%True 6%

Questions and answers

What is the best Kayn build in ARAM Mayhem?

On patch 26.21 ARAMKit ranks the Lethality build first for Kayn: Hubris, Axiom Arc and Death's Dance. It is also the most played build.

What are the best augments for Kayn in ARAM Mayhem?

The S-tier cards for Kayn, best first: Mad Scientist, Hand of Baron, Weapon of Destiny, Giant Slayer and Tooth Fairy. The full list by tier is on this page.

Is Kayn good in ARAM Mayhem?

Kayn is tier A on patch 26.21, #20 of 173 champions, with a 53.1% win rate over 1.8 million games. That makes it a strong pick in ARAM Mayhem right now.

What is the best first augment for Kayn in ARAM Mayhem?

For Kayn's first pick on patch 26.21: Mad Scientist, Weapon of Destiny, Tooth Fairy, Earthwake and Giant Slayer, best first. Cards rank differently in later picks; the table on this page has all four.

Other Fighters in ARAM Mayhem

Get Kayn's build and card tiers in your game

LazyElo is a free Windows app that sits next to the League client. In the Mayhem lobby it shows which champion on your bench is strongest; in the game you type the three cards you're offered and see their tier for Kayn side by side, with this build in the overlay.

Download LazyElo for Windows

Free plan, no ads. For Windows 10 and 11.

Plans and pricing The ARAM Mayhem overlay

ARAM Mayhem tier list
Every champion by tier on patch 26.21.
ARAM Mayhem augment tier list
Every card from S to D over all champions.
All Mayhem builds
Pick a champion from the full list.
ARAM Mayhem rules
Augment levels, rerolls and why there are no runes.
ARAM Mayhem guide
How the mode, the cards and the picks work.
Kayn counters
Its lane matchups on Summoner's Rift.
ARAM Mayhem overlay
The card picker and build in the app.

Source: ARAMKit, used with permission. Patch 26.21, 23,177,263 ARAM Mayhem games, data of October 28, 2026. Riot keeps Mayhem games out of its public match API, so these aggregates come from ARAMKit. Card tiers are shown without win rates, as Riot's developer policy asks.