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Karthus vs Mordekaiser
Top Lane MatchupKarthus vs Mordekaiser TOP matchup tips: who wins, how to trade, wave control and common mistakes.
You
VS
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Who Wins
- Pre-6, you lose extended trades because your Q poke alone cannot outdamage his passive aura and W sustain, and you have zero tools to disengage once he closes the gap with E.
- Post-6, you lose the 1v1 entirely if he ults you — he steals your AP, negating your damage advantage, and your passive is useless inside the Death Realm since there are no allies to benefit from it.
How to Trade
- Your best pattern is to maintain maximum range and use Q to poke him during his cooldown windows, never letting him stack his passive on you freely.
- If he walks up aggressively, use E wall to slow his approach and create distance — but understand this only delays trades, not wins them, so your goal is to chip him down over many safe interactions rather than committing to all-ins.
Wave Control
- Push the wave consistently to deny him the ability to walk up and stack his passive on you safely, and use the resulting tower pressure to force him to farm under tower where his melee range is punished.
- A shoved wave also gives you the option to roam with R or recall safely, which is critical since your global R is your primary source of map impact in this losing lane.
Mistakes to Avoid
- Do not stand still to channel E wall when he is already in melee range — the cast time and your immobility during it give him free passive stacks and a free E pull, turning a bad trade into a catastrophic one.
- Respect his E range at all times and pre-position to avoid being in the cone, because getting pulled into his aura while he has passive stacks active is how you lose trades you thought you could survive.
Created on 06/28/2026
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