Zac

the Secret Weapon

TankFighterGeneral kit and base stats · version 16.19.1

Cell Division

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.

Passive · no active cost or cooldown

Base statistics

None

Health: 685
Resource: 0
Armor: 33
Move speed: 340
Attack damage: 60
Attack speed: 0.736

Statistics patch

About this data

Viewing the current patch. If no sample is available yet, you can open an available historical patch.

Editorial plan reviewed for 26.15. This does not establish a review for statistics patch 16.19.

Game plan · Jungle

Clear toward a followable angle, then convert every entry into map value

Plan overview

Start with a route that gives Zac a healthy first clear and ends beside a lane that can follow his engage. A three-camp gank is an exception for a clearly exposed target with real allied setup; if that condition is absent, full clear toward Scuttle and the next camp cycle. Around every objective, work backwards: push nearby waves, reset, sweep 60–90 seconds early, then use Elastic Slingshot to punish an approach or begin once the enemy jungler is displaced. When ahead, convert kills into towers, objectives or camps. When behind, use catch-up farming, mirror-clear away from pressure, and look for a pick before contesting. Track Cell Division as a strategic cooldown: if it is available, you can accept more calculated frontline risk; if it has been consumed, choose entries that leave a retreat or guaranteed follow-up.

Plan by phase

Build the first engage without sacrificing the jungle

0:00–5:00; first clear, Scuttle at 2:55, dragon from 5:00 and grubs at 8:00

From 0:00–5:00, choose a conditioned full clear when your lanes lack setup or the enemy wins early river contact; Zac's early gank is worth the camps only when the target is extended, escape tools are missing, or a crash traps them. Path to finish near a lane with follow-up, protect your health for the 2:55 Scuttle window, and contest only with nearby priority. If ahead, repeat efficient clears and threaten the next exposed lane; if behind, mirror away from the enemy and take guaranteed camps rather than forcing a low-probability charge.

Game situations

Choose a situation

Path

Path for the first reliable engage

If your lanes lack priority and the enemy jungler can win an early river duel, then choose a full-clear direction that ends near your stronger arrival lane and avoid an isolated Scuttle contest. During the first clear, convert to a gank only when the target is past river, lacks an escape, or is collecting a crashed wave; otherwise preserve camp tempo and look again after your reset.

With Zac

If Zac is your jungler, push the lane before he arrives and keep the enemy's escape route visible; his Elastic Slingshot is far more reliable when the target is already forced to collect a crashed wave. Follow within one screen rather than expecting him to create a kill alone.
If Zac begins charging near an objective, hold your crowd control and damage for the moment he lands. When he connects multiple targets, focus the target your team can reach instead of splitting across the backline, then help secure the objective while the enemy is displaced.
If Zac's Cell Division is available and he enters first, protect the area around his bloblets only when doing so does not abandon the objective or your carry. If the passive is on cooldown, give him a clearer retreat and avoid asking him to repeatedly face-check the same corridor.
If Zac is behind, help him convert a successful pick into something immediate: shove the nearby wave, take the uncontested camp, or establish objective vision. Do not demand repeated ganks into a losing lane when his guaranteed farm and the next timer offer more value.

Identity, strengths and limits

Turn one elastic angle into a numbers advantage

Jungle · Vanguard initiator · terrain-based engage

Zac is a primary vanguard who converts fog, terrain and enemy overextension into multi-target disruption. He wants to arrive from an unexpected angle with Elastic Slingshot, create contact with Stretching Strikes, and keep enemies occupied while his team follows. Unstable Matter gives him sustained nearby damage, while Let's Bounce! can extend the disruption when several enemies are reachable. Cell Division changes his risk calculation: ability hits create reabsorbable blobs, and fatal damage can split him into four bloblets that may recombine, but the passive has a five-minute cooldown. Zac is not an assassin, a farming-only tank, or a champion who should engage without checking ally distance; his value comes from choosing a followable entry and converting it into map control.

Strengths

Long-range, terrain-based initiation that can bypass ordinary approach paths.
Multi-target disruption that gives nearby allies time to focus a target or disengage.
Free-casting kit supports repeated clears and gank attempts without a mana economy.
Cell Division can make a committed frontline play recoverable when surviving bloblets can recombine.
Sustained nearby damage helps Zac contribute after the initial engage rather than relying on one burst.

Limits and risks

Forcing a level-three gank when the enemy is not extended or your laner cannot follow; the lost camps can outweigh the threat.
Starting an objective while the enemy jungler is alive, unseen, and able to match or exceed your Smite threshold.
Charging from fog when allies are too far away, turning a vanguard entry into an isolated death.
Treating Cell Division as permission to overstay when the five-minute passive cooldown is unavailable.
Using an engage on a low-value target when the team could instead hold the threat for the next objective setup.

One idea for your next game

For the next game, make every Elastic Slingshot charge answer two questions before you release it: who can follow within one screen, and what do we gain if it works? Charge only when the lane is genuinely exposed or an objective setup is beginning. If the answer is unclear, keep clearing toward the next timer. Zac wins by turning one reachable angle into a numbers advantage, then banking that advantage as a dragon, grubs, Herald, tower, or safe reset—not by collecting attempts.

Observed matchups

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Observed builds

No statistics for this patch yet

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Champion lore

Zac is the product of a toxic spill that ran through a chemtech seam and pooled in an isolated cavern deep in Zaun's Sump. Despite such humble origins, Zac has grown from primordial ooze into a thinking being who dwells in the city's pipes, occasionally emerging to help those who cannot help themselves or to rebuild the broken infrastructure of Zaun.

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