How to win lane as Sion against Gwen · 49.86% win rate (2,948 Emerald+ games, lolalytics, sampled July 2026) · Matchup data reviewed on patch 26.15
Her %HP shreds you — build MR, charged Q off mist.
Track: Gwen's W — Hallowed Mist (22–18s cooldown). She’s safe inside. Fight when down.
Read from Sion's seat: which stage windows this plan plays for against Gwen.
| Stage | Favoured | Why |
|---|---|---|
| Level 1 | Even / skill | Both kits are level 1 capable but neither dominates — Gwen's Q procs true damage on approach, your Q knockup punishes her CS greed; the outcome is coin-flip positioning. |
| Level 2 | Gwen | Gwen's E dash is online and her scissors begin stacking percent-max-HP true damage — she wins the short trade and her mist arrives to block your charged Q stun. |
| Level 3 | Gwen | Hallowed Mist is 22s at rank 1 and she is untargetable to you only from outside it — the way in is to walk into the mist yourself and swing from inside. |
| Levels 4-5 | Even / skill | You have your full basic kit but no Onslaught threat yet; she has mist, scissors, and E mobility — neither can cleanly close, so the lane sits even if you play defensively. |
| Level 6 | Gwen | Her Needlework poke adds long-range percent-HP damage from outside your charged Q range; your R gives you an engagement angle but she can sidestep with E if she reads the vector. |
| First item | Gwen | Riftmaker's percent-max-HP empowerment comes online here — your HP passive stacks begin working against you, and she sustains through your W-shield with omnivamp. |
| Two+ items | Gwen | Full AP Gwen scissors erase your HP investment every trade; your passive zombie threat is irrelevant when she can safely poke from scissors range and re-enter mist on demand. |
At level 1 you have genuine threat — a fully charged Q knockup can punish her if she greeds for CS, but Gwen's Q true damage ticks and E mobility mean she punishes you mid-charge the moment she reads the windup. Farm with the tip of Q and accept that she will win most trades if she plays correctly. Your W-shield is your lifeline: pop it to absorb her scissors burst, then disengage rather than extending into a losing brawl. Level 2 makes things harder — she gets her Hallowed Mist and can block your charged Q stun from inside it, stripping your only real engage tool in a straight trade.
Pooled Emerald+ win rates from Sion's side, sampled July 2026.
The full Sion vs Gwen 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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Nobody on paper — a 49.86% win rate over 2,948 games makes this a coin flip decided by play, not champion select.
Yes — Sion vs Gwen is a genuine skill matchup: 49.86% win rate, and the favour swings window to window rather than being set at champion select.
No hard counter either way — the Sion vs Gwen win rate is 49.86%, an even lane decided by execution.
Sion takes Grasp of the Undying on the Resolve tree with Demolish, Second Wind and Overgrowth, and Precision secondary (Triumph and Legend: Haste) vs Gwen.
Start Doran's Shield + Health Potion and back for Executioner's Calling (≈800g) — cuts her healing. Build Heartsteel (W + passive love HP) first, then Warmog's Armor / Thornmail, with Mercury's Treads.
Playing the other side? Gwen vs Sion guide →
All Sion top lane matchups →
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