How to win lane as Trundle against Sion · 48.12% win rate (1,249 Emerald+ games, lolalytics, sampled July 2026) · Matchup data reviewed on patch 26.15
Dodge his charged Q — bite him and R-steal his HP.
Track: Sion's Q — Decimating Smash (10–6s cooldown). Charged = knockup. Sidestep it.
Read from Trundle's seat: which stage windows this plan plays for against Sion.
| Stage | Favoured | Why |
|---|---|---|
| Level 1 | Even / skill | Neither of you has a level-1 kill threat — Soul Furnace is not online and Chomp's AD sap wins short trades, but nobody solo kills here; farm and probe. |
| Level 2 | Even / skill | Soul Furnace lands at level 2 and eats your first Chomp; bait him into spending it on a weak trade, then re-engage on its 15-second rank-1 cooldown. |
| Level 3 | Sion | His full kit is live at level 3 — a charged Decimating Smash knocks up, Soul Furnace absorbs the answer, and Roar of the Slayer reduces your armour on the way in. Sidestep the charge. |
| Levels 4-5 | Sion | Decimating Smash (10s at rank 1) is the only burst tool to respect at levels 4-5; bait the charge, then fight inside Frozen Domain where your speed and healing beat his poke. |
| Level 6 | Trundle | Subjugate takes a percent of Sion's health, armour and MR and doubles it over 4 seconds — he funds your tankiness, and the brawl inside Frozen Domain stops being winnable for him. |
| First item | Sion | Sion's Heartsteel first-item spike outpaces Iceborn Gauntlet's Chomp synergy; the HP wall he builds means your trades feel lower-damage than expected — wait for two items before forcing all-ins. |
| Two+ items | Trundle | At two items Subjugate's theft doubles over 4 seconds against the deepest stat pool on the map — the more tank items he buys the more you take, and Frozen Domain holds him there for the whole cycle. |
Level 1 is a chess match of short trades: Chomp saps his attack damage and King's Tribute heals off any dying minion, but Sion cancels that advantage by charging Decimating Smash before you close — if you see him standing still and winding up, walk sideways, do not chase. At level 2 Soul Furnace comes online and he will try to eat your first Chomp with it; bait the shield out on a weak trade, then re-engage on its 15-second rank-1 cooldown and you win that window cleanly. At level 3 the charged knock-up, the shield and Roar of the Slayer are all live, and that is genuinely his best 1v1 window in this lane — Roar also reduces your armour on the first target it hits. Stay at medium range, feint in to bait the charge, sidestep it, then punish the recovery with Chomp into Frozen Domain.
Pooled Emerald+ win rates from Trundle's side, sampled July 2026.
The full Trundle vs Sion 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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Sion, slightly — Trundle wins 48.12% of 1,249 games; winnable with the right plan.
Mostly — Sion has a small statistical edge (51.88% win rate), but execution decides this lane far more than the pick does.
No — if anything Sion has the slight edge (Trundle wins 48.12%), though it stays close.
Trundle takes Conqueror on the Precision tree with Triumph, Legend: Alacrity and Last Stand, and Resolve secondary (Bone Plating and Unflinching) vs Sion.
Start Doran's Blade + Health Potion and back for Executioner's Calling (≈800g) — cuts his healing. Build Trinity Force (the duel spike) first, then Sterak's Gage / Spirit Visage, with Plated Steelcaps.
Playing the other side? Sion vs Trundle guide →
All Trundle top lane matchups →
More Trundle top lane matchups: vs Sett · vs Shen · vs Singed · vs Swain · vs Sylas · vs Tahm Kench