Matchup

Strong engageHeavy CCVery tankyHigh sustain

You are stronger late game — farm safe and avoid early trades.

Build vs Zac

Build adapted to this matchup

Starting items

Doran's Ring
Health Potion
x2

Core build

Hollow Radiance
1vs AP
Riftmaker
2Mage tank
Zhonya's Hourglass
3vs AD

Standard

Boots of Swiftness
4vs Slow
Oblivion Orb
5

Summoner spells

41276%
41414%

Anti AD

Plated Steelcaps
4vs AD
Thornmail
5vs Hybride
Frozen Heart
vs AD

Anti Tank

Stormsurge
5vs Tank

DPS

Hextech Rocketbelt
Mage tank
Liandry's Torment
Mage tank
Rabadon's Deathcap
Mage
Lich Bane
Mage

Other options

Oblivion Orb
Dark Seal
100.0% WR2 games
SorcerySorcery
Stormraider's SurgeStormraider's Surge
Manaflow BandManaflow Band
TranscendenceTranscendence
ScorchScorch
ResolveResolve
UnflinchingUnflinching
Second WindSecond Wind
Adaptive ForceAdaptive ForceHealth

Power Spikes

Strength by game phase

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

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