Irelia vs Cassiopeia MID Matchup Guide | LaneStomp

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Champion

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Irelia

VS

Mid

Cassiopeia

Irelia vs Cassiopeia

Updated May 31, 2026

Overview

Irelia controls lane pressure by using minion waves to create Q reset paths and force extended trades before Cassiopeia stabilizes.
Prioritize denying Cassiopeia a calm scaling lane by punishing her cooldowns and wave positioning to avoid her sustained DPS.

Trading pattern

Stack passive and use Q resets through low-health minions to close distance and engage with E stun or R mark.
Punish Cassiopeia when Cassiopeia Q or Cassiopeia W are on cooldown by forcing extended trades.
Avoid trading when Cassiopeia is poisoned and can repeatedly cast Cassiopeia E for sustained damage.

Danger windows

Be cautious when Cassiopeia's Cassiopeia W is up as it grounds dashes and limits mobility.
Avoid facing Cassiopeia directly during her Cassiopeia R to prevent stun or slow.
Missed E or R marks reduce your kill threat and increase vulnerability to Cassiopeia's sustained damage.

Early game

Use level 2 power spike with Q and E to threaten stun and all-in before Cassiopeia can safely trade.
Maintain passive stacks on minions to enable Q resets and extended trades when Cassiopeia's key spells are down.
Avoid committing without Q reset paths or when Cassiopeia's Cassiopeia W is available to ground dashes.

Power spikes

Major spikes: Level 2 with Q and E access for stun and mobility.
Major spike: Level 6 R for stronger engage and zone control.
Respect Cassiopeia's level 6 Cassiopeia R which punishes facing her during commits.

Win conditions

Use minion wave control to create Q reset paths and extend fights when Cassiopeia's Cassiopeia W and Cassiopeia R are down.
Force all-ins after landing E stun or R mark to secure kills and snowball pressure.
Deny Cassiopeia the chance to apply poison and sustain with Cassiopeia E by punishing her cooldowns and positioning aggressively.