Matchup

Strong engageHeavy CCVery tankyHigh sustain

Build vs Zac

Build adapted to this matchup

Starting items

Doran's Shield
Health Potion

Core build

Tear of the Goddess
1
Sundered Sky
2Bruiser
Fimbulwinter
3Survival

Standard

Boots of Swiftness
4vs Slow
Executioner's Calling
5

Summoner spells

41273%
41426%

Anti AD

Plated Steelcaps
4vs AD
Iceborn Gauntlet
5vs AD
Randuin's Omen
vs AD
Unending Despair
vs AD
Sunfire Aegis
vs AD
Dead Man's Plate
vs AD

Anti Heal

Thornmail
6vs Hybride

Anti AP

Mercury's Treads
4vs CC
Spirit Visage
5vs AP
Hollow Radiance
vs AP
Kaenic Rookern
vs AP

Other options

Executioner's Calling
Jak'Sho, The Protean
vs Hybride
Winter's Approach
Survival
100.0% WR2 games
ResolveResolve
Grasp of the UndyingGrasp of the Undying
Shield BashShield Bash
Second WindSecond Wind
OvergrowthOvergrowth
PrecisionPrecision
Presence of MindPresence of Mind
Last StandLast Stand
Adaptive ForceAdaptive ForceHealth

Power Spikes

Strength by game phase

Early (0-15)
Mid (15-30)
Late (30+)
PoppyPoppy
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