Gnar vs Cassiopeia — Top Lane Matchup Guide

How to win lane as Gnar against Cassiopeia · 53.33% win rate (315 Emerald+ games, lolalytics, sampled July 2026) · Matchup data reviewed on patch 26.15

Verdict: Gnar is slightly favoured — 53.33% win rate over 315 games.

At a glance

Weather the poke — kite her mini and Mega-stun the Miasma cooldown.

Track: Cassiopeia's W — Miasma (24–16s cooldown). Grounds you — dashes and movement abilities are disabled inside it.

Do

  • Boomerang-poke and hop away
  • Manage rage for Mega on demand
  • Mega-stun when Miasma is down

Don't

  • Get caught at 0 rage post-Mega
  • Hop into her engage
  • Transform off-timing

Runes & build vs Cassiopeia

Start
Doran's Shield + Health Potion (vs her poke)
First back
Core component + boots (≈1300g)
First item
Stridebreaker (stick + waveclear)
Then
Sterak's Gage
Boots
Mercury's Treads
Runes
Grasp of the Undying (Precision): Triumph, Legend: Alacrity, Last Stand · Resolve: Second Wind, Bone Plating · Shards: Adaptive Force, Adaptive Force, Magic Resist

Favour timeline — the windows in Gnar's game plan

Read from Gnar's seat: which stage windows this plan plays for against Cassiopeia.

StageFavouredWhy
Level 1CassiopeiaMini's ranged autos plus a single Boomerang Throw win the first trade before she has any poison stacks or Twin Fang ramp.
Level 2Even / skillThe level-2 Hyper third-hit proc plus Boomerang is a strong free trade, but her Miasma is coming online — only take it before her grounding is up, so the window is even.
Level 3GnarAt 3 her Miasma (W) grounds your Hop and her ramped Twin Fang shreds your squishy Mini body — she owns the trade pattern now.
Levels 4-5GnarVolatile Rage RNG plus her poke means if you're stuck Mini with Rage on cooldown, her grounded Twin Fang combo just kills you.
Level 6CassiopeiaPetrifying Gaze (R) face-stuns you out of the Mini-to-Mega transition and her full Twin Fang combo follows — without Mega up you can't answer it.
First itemEven / skillYour bruiser item spike narrows the gap, but she's still grounding your Hop and out-DPSing your Mini frames with poke items, so this window is genuinely even.
Two+ itemsGnarYou can't 1v1 a scaled Cassiopeia, but a Mega GNAR! wall-flip and Wallop flip teamfights — group and engage rather than split into her kite.

How to beat Cassiopeia as Gnar: the early game

Levels 1-2 are yours: in Mini form your ranged autos plus Boomerang Throw out-poke her before she has any poison stacks, and the level-2 Hyper third-hit proc lets you walk up, slap a free trade, and step back on the move-speed burst before Twin Fang can ramp. Throw Boomerang and catch the return for the cooldown refund so you can chip her without burning mana. But the moment she hits 3 and Miasma (W) is up, stop committing into it — that cloud grounds you, so your Hop won't disengage and you're stuck eating poison-stacked Twin Fangs on a squishy body.

Hardest and easiest matchups for Gnar in top lane

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

Hardest

Easiest

Read the rest of this matchup

The full Gnar vs Cassiopeia 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 Gnar vs Cassiopeia in top lane?

Gnar, slightly — a 53.33% win rate edge over 315 games; execution can flip it.

Is Gnar vs Cassiopeia a skill matchup?

Mostly — Gnar has a small statistical edge (53.33% win rate), but execution decides this lane far more than the pick does.

Does Gnar counter Cassiopeia?

Not a hard counter — Gnar has a slight edge (53.33% win rate), and play quality decides the rest.

What runes does Gnar take vs Cassiopeia?

Gnar takes Grasp of the Undying on the Precision tree with Triumph, Legend: Alacrity and Last Stand, and Resolve secondary (Second Wind and Bone Plating) vs Cassiopeia.

What should Gnar build vs Cassiopeia?

Start Doran's Shield + Health Potion (vs her poke) and back for Core component + boots (≈1300g). Build Stridebreaker (stick + waveclear) first, then Sterak's Gage, with Mercury's Treads.

Related guides

Playing the other side? Cassiopeia vs Gnar guide →
All Gnar top lane matchups →

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