Matchup

Strong engageHeavy CCVery tankyHigh sustain

You are stronger early — look to snowball before your opponent scales.

Build vs Zac

Build adapted to this matchup

Starting items

Doran's Blade
Health Potion

Core build

Bramble Vest
1
Black Cleaver
2vs Tank
Titanic Hydra
3Bruiser

Standard

Boots of Swiftness
4vs Slow
Mortal Reminder
5vs Hybride

Summoner spells

41468%
41221%

Anti AD

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

Anti Heal

Mortal Reminder
6vs Hybride

Anti Tank

Voltaic Cyclosword
5vs Tank
Profane Hydra
vs Tank
Serpent's Fang
vs Tank

DPS

Hullbreaker
Bruiser
Eclipse
DPS
Sundered Sky
Bruiser

Other options

Overlord's Bloodmail
HP
Sterak's Gage
Survival
Chempunk Chainsword
vs Heal
100.0% WR1 games
PrecisionPrecision
ConquerorConqueror
TriumphTriumph
Legend: AlacrityLegend: Alacrity
Last StandLast Stand
ResolveResolve
DemolishDemolish
Bone PlatingBone Plating
Attack SpeedAdaptive ForceHealth Scaling

Power Spikes

Strength by game phase

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