How to win lane as Sion against Mordekaiser · 44.96% win rate (3,044 Emerald+ games, lolalytics, sampled July 2026) · Matchup data reviewed on patch 26.15
Build MR — charged Q stun, survive his realm.
Track: Mordekaiser's R — Realm of Death (140–100s cooldown). His 1v1 realm. Out-scale him in it.
Read from Sion's seat: which stage windows this plan plays for against Mordekaiser.
| Stage | Favoured | Why |
|---|---|---|
| Level 1 | Even / skill | Neither champion has a reliable level-1 engage — Morde has no dash and your charged Q is too slow to land on a patient opponent, so the opener is a farm-or-die skill check. |
| Level 2 | Mordekaiser | Death's Grasp pull into an isolated Obliterate is online at level 2, and Obliterate is a 8s cooldown; trade only with Soul Furnace already up. |
| Level 3 | Mordekaiser | At level 3 he has E-Q-W available and can combo you for half your HP if you let him step in — respect the range, last-hit safely, charged Q from outside his pull distance. |
| Levels 4-5 | Mordekaiser | Levels 4-5 he roams for a zone pick or just bullies you off CS; your charged Q has no target to punish and his W sustains through your poking, so accept the farm loss and stack HP. |
| Level 6 | Mordekaiser | Realm of Death goes live and it is his best window all game — low-HP Sion dragged into an isolated stat-steal duel usually dies; only fight the Realm with W-shield ready and a charged Q stun prepared. |
| First item | Mordekaiser | His first AP item makes his Realm duel near-certain-kill if you enter below 60% HP; Heartsteel or Hollow Radiance must be rushing so your HP total tilts the 1v1 back toward a contest. |
| Two+ items | Even / skill | Your stacked HP total and zombie passive make you a legitimate frontline threat he cannot burst or ignore — the matchup converges to a coin flip at 2+ items, exactly what the 49.97% WR reflects. |
Levels 1-3 are the one window where neither of you has an automatic advantage — Mordekaiser's E pull is short range and he has no dash, so he can only hurt you if you stand directly in his Q slam hitbox. Keep max distance, last-hit with the tip of your Q, and only commit to a charged Q knockup if he over-extends to zone you. W-shield his Q hit the instant his E lands, because the isolated bonus damage is the real chunk — absorbing even half of that with your shield completely neutralizes the trade. His level 3 all-in (E pull into Q into W shield pop) is his first real threat; back off at low health before you gift him a kill he can snowball into Realm dominance.
Pooled Emerald+ win rates from Sion's side, sampled July 2026.
The full Sion vs Mordekaiser 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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Mordekaiser — Sion wins only 44.96% of 3,044 games, so Sion plays this as the disadvantaged side.
Not really — Mordekaiser holds a real statistical advantage (55.04% win rate), so Sion is the one working uphill.
No — Mordekaiser counters Sion (Sion wins only 44.96% of games). Play it as the disadvantaged side and lean on the windows in the plan.
Sion takes Grasp of the Undying on the Resolve tree with Demolish, Second Wind and Overgrowth, and Precision secondary (Triumph and Legend: Haste) vs Mordekaiser.
Start Doran's Shield + Health Potion and back for Executioner's Calling (≈800g) — cuts his healing. Build Heartsteel (W + passive love HP) first, then Warmog's Armor / Thornmail, with Mercury's Treads.
Playing the other side? Mordekaiser vs Sion guide →
All Sion top lane matchups →
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