Ornn vs Zac — Top Lane Matchup Guide

How to win lane as Ornn against Zac · 54.49% win rate (969 Emerald+ games, lolalytics, sampled July 2026) · Matchup data reviewed on patch 26.15

Verdict: Ornn is slightly favoured — 54.49% win rate over 969 games, and Ornn's game plan below claims 5 of the 7 stage windows.

At a glance

Step on blobs — W-brittle, E-knock him up.

Track: Zac's E — Elastic Slingshot (21–9s cooldown). His engage. E-knock up after it.

Do

  • Step on his blobs
  • W-brittle + tank his combo
  • E-knock him up

Don't

  • Let him eat blobs
  • Get E-knocked-up
  • Fall behind in scaling

Runes & build vs Zac

Start
Doran's Shield + Health Potion
First back
Executioner's Calling (≈800g) — cuts his healing
First item
Iceborn Gauntlet (forge-upgradeable)
Then
Sunfire Aegis
Boots
Plated Steelcaps
Runes
Grasp of the Undying (Resolve): Demolish, Second Wind, Overgrowth · Precision: Triumph, Legend: Haste · Shards: Health Scaling, Adaptive Force, Health

Favour timeline — the windows in Ornn's game plan

Read from Ornn's seat: which stage windows this plan plays for against Zac.

StageFavouredWhy
Level 1Even / skillYou have no shield, no combo and are mana-starved at 1 — but Zac is a slow tank too, so just farm and dodge his E-sling from brush.
Level 2Even / skillStill pre-W you can't punish, and his E-Q-W engage can chunk you, so concede the level and last-hit safely.
Level 3OrnnBellows Breath comes online — its unstoppable percent-HP poke and shield out-trade his even-damage blob pokes.
Levels 4-5OrnnYour E-into-Q-pillar knock-up detonates W's Brittle for burst he has no dash to dodge.
Level 6OrnnR brittles on the first pass and the recast knocks up — you own the all-in at 6.
First itemOrnnYour Heartsteel/Sunfire spike makes you a durable W-poke bully he can't sustain against.
Two+ itemsOrnnYour free Masterwork upgrades give your team a gold lead and you isolate the off-meta Zac before fights even start.

How to beat Zac as Ornn: the early game

Zac is just another tank for your W to chew through, but level 1-2 you have no shield and no combo, so respect his E-sling: if he ranges in from brush he can Q-knockup and W you before you can answer. Sit back and farm to 3. The second you have Bellows Breath, your unstoppable percent-HP exhale shreds his big blob health pool and the shield blunts his all-in — he can't out-trade that with even-damage poke.

Hardest and easiest matchups for Ornn in top lane

Pooled Emerald+ win rates from Ornn's side, sampled July 2026.

Hardest

Easiest

Read the rest of this matchup

The full Ornn vs Zac report continues with the mid-game plan, the late-game and teamfight plan, every power spike to play around, and the win conditions for both sides — plus cooldown tracking and the live enemy-jungle tracker inside the app.

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Common questions

Who wins Ornn vs Zac in top lane?

Ornn, slightly — a 54.49% win rate edge over 969 games; execution can flip it.

Is Ornn vs Zac a skill matchup?

Mostly — Ornn has a small statistical edge (54.49% win rate), but execution decides this lane far more than the pick does.

Does Ornn counter Zac?

Not a hard counter — Ornn has a slight edge (54.49% win rate), and play quality decides the rest.

What runes does Ornn take vs Zac?

Ornn takes Grasp of the Undying on the Resolve tree with Demolish, Second Wind and Overgrowth, and Precision secondary (Triumph and Legend: Haste) vs Zac.

What should Ornn build vs Zac?

Start Doran's Shield + Health Potion and back for Executioner's Calling (≈800g) — cuts his healing. Build Iceborn Gauntlet (forge-upgradeable) first, then Sunfire Aegis, with Plated Steelcaps.

Related guides

Playing the other side? Zac vs Ornn guide →
All Ornn top lane matchups →

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