Matchup

Strong engageHeavy CCVery tankyHigh sustain

Build vs Zac

Build adapted to this matchup

Starting items

Doran's Ring
Health Potion
x2

Core build

Dusk and Dawn
1Mage tank
Statikk Shiv
2DPS
Sundered Sky
3Bruiser

Standard

Boots of Swiftness
4vs Slow
Liandry's Torment
5Mage tank

Summoner spells

41460%
41230%

Anti AD

Plated Steelcaps
4vs AD
Randuin's Omen
5vs AD

Anti AP

Mercury's Treads
4vs CC
Spirit Visage
5vs AP

DPS

Liandry's Torment
Mage tank
Titanic Hydra
Bruiser
Malignance
Mage
Spear of Shojin
Bruiser
Riftmaker
Mage tank
Rabadon's Deathcap
Mage
Cosmic Drive
Mage tank

Other options

Fimbulwinter
Survival
Oblivion Orb
Executioner's Calling
Tear of the Goddess
Overlord's Bloodmail
HP
Dark Seal
Bramble Vest
Jak'Sho, The Protean
vs Hybride
100.0% WR1 games
ResolveResolve
Grasp of the UndyingGrasp of the Undying
Shield BashShield Bash
Second WindSecond Wind
RevitalizeRevitalize
SorcerySorcery
Axiom ArcanistAxiom Arcanist
CelerityCelerity
Adaptive ForceAdaptive ForceHealth Scaling

Power Spikes

Strength by game phase

Early (0-15)
Mid (15-30)
Late (30+)
UdyrUdyr
ZacZac
Neutral
Neutral
Neutral

Zac's abilities

Passive, spells and ultimate

Cell Division (P)

Each time Zac hits an enemy with an ability, he sheds a chunk of himself that can be reabsorbed to restore Health. Upon taking fatal damage, Zac splits into 4 bloblets that attempt to recombine. If any bloblets remain, he will revive with an amount of Health depending on the Health of the surviving bloblets. Each bloblet has a percentage of Zac's maximum Health, Armor and Magic Resistance. This ability has a 5 minute cooldown.

Cooldowns

Cooldowns by spell rank

LevelQWER
314s5s22s
611s5s22s2m
98s5s22s2m
118s5s22s1m45
168s5s16s1m30
188s5s10s1m30

Playing against Zac

How to counter and exploit weaknesses

1

Walk on his blobs (passive) to destroy them and prevent him from healing.

2

His E is long range but visible and has a windup: side-step when you see him charging.

3

If Zac dies, he splits into blobs that reform: kill all 4 blobs to kill him for good.

4

His engage is strong but he's vulnerable to burst once inside — focus him after his engage.

Source: op.gg + LTL Engine · Patch 16.9.1 · May 9, 2026