Best Cassiopeia Counters and Counterpicks

Use RiftMind to compare Cassiopeia counters, matchup deltas, observed win rates, expected win rates, role-specific counterpick data, and champions Cassiopeia is good against for low and high Elo League of Legends drafts.

Updated 2026-09-20. Data is current for LoL patch 26.18 (all regions, low elo and high elo).

How these matchup statistics are calculated

Counter and synergy statistics use Ranked Solo/Duo games, exclude matches shorter than 600 seconds, and group results by patch window, region, rank scope, and champion role.

Pairwise pages use a rolling three-patch window and compare observed win rate with a log-odds expected win rate based on each champion's role-adjusted baseline; listed pairs require at least 500 games.

Read the full methodology for the model and guidance on interpreting these results.

Summary

Low Elo data lists Veigar Mid, Zed Mid, Fizz Mid, Malzahar Mid, Viktor Mid, Syndra Mid, and Yone Mid as the strongest counters for Cassiopeia. Cassiopeia is listed as favorable into Sylas Mid, Locke Mid, Akali Mid, Ahri Mid, Yasuo Mid, and Katarina Mid. The detailed info below lists each matchup with observed win rate, expected win rate delta, sample size, rank scope, and patch window.

Detailed info:

Top 7 Low Elo Cassiopeia Mid same-role counters

  1. Veigar Mid - Low Elo data: Cassiopeia Mid vs Veigar Mid, 39.5% observed win rate, -5.9 percentage points vs expected, 708 games, 3-patch window 26.16-26.18.
  2. Zed Mid - Low Elo data: Cassiopeia Mid vs Zed Mid, 45.1% observed win rate, -2.9 percentage points vs expected, 804 games, 3-patch window 26.16-26.18.
  3. Fizz Mid - Low Elo data: Cassiopeia Mid vs Fizz Mid, 42.9% observed win rate, -2.2 percentage points vs expected, 560 games, 3-patch window 26.16-26.18.
  4. Malzahar Mid - Low Elo data: Cassiopeia Mid vs Malzahar Mid, 43.7% observed win rate, -1.7 percentage points vs expected, 721 games, 3-patch window 26.16-26.18.
  5. Viktor Mid - Low Elo data: Cassiopeia Mid vs Viktor Mid, 44.4% observed win rate, -1.3 percentage points vs expected, 782 games, 3-patch window 26.16-26.18.
  6. Syndra Mid - Low Elo data: Cassiopeia Mid vs Syndra Mid, 45.6% observed win rate, -1.2 percentage points vs expected, 724 games, 3-patch window 26.16-26.18.
  7. Yone Mid - Low Elo data: Cassiopeia Mid vs Yone Mid, 46.6% observed win rate, -0.2 percentage points vs expected, 889 games, 3-patch window 26.16-26.18.

Top 6 Low Elo champions Cassiopeia Mid is good against

  1. Sylas Mid - Low Elo data: Cassiopeia Mid vs Sylas Mid, 56.9% observed win rate, +8.9 percentage points vs expected, 668 games, 3-patch window 26.16-26.18.
  2. Locke Mid - Low Elo data: Cassiopeia Mid vs Locke Mid, 51.8% observed win rate, +2.7 percentage points vs expected, 527 games, 3-patch window 26.16-26.18.
  3. Akali Mid - Low Elo data: Cassiopeia Mid vs Akali Mid, 50.7% observed win rate, +2.6 percentage points vs expected, 533 games, 3-patch window 26.16-26.18.
  4. Ahri Mid - Low Elo data: Cassiopeia Mid vs Ahri Mid, 48.4% observed win rate, +2.2 percentage points vs expected, 909 games, 3-patch window 26.16-26.18.
  5. Yasuo Mid - Low Elo data: Cassiopeia Mid vs Yasuo Mid, 49.7% observed win rate, +2.1 percentage points vs expected, 1,125 games, 3-patch window 26.16-26.18.
  6. Katarina Mid - Low Elo data: Cassiopeia Mid vs Katarina Mid, 48.6% observed win rate, +0.8 percentage points vs expected, 605 games, 3-patch window 26.16-26.18.

Top 10 Low Elo Cassiopeia all-role counters

  1. Senna Support - Low Elo data: Cassiopeia Mid vs Senna Support, 40.4% observed win rate, -6.1 percentage points vs expected, 510 games, 3-patch window 26.16-26.18.
  2. Veigar Mid - Low Elo data: Cassiopeia Mid vs Veigar Mid, 39.5% observed win rate, -5.9 percentage points vs expected, 708 games, 3-patch window 26.16-26.18.
  3. Yunara ADC - Low Elo data: Cassiopeia Mid vs Yunara ADC, 43.0% observed win rate, -4.3 percentage points vs expected, 640 games, 3-patch window 26.16-26.18.
  4. Yone Top - Low Elo data: Cassiopeia Mid vs Yone Top, 42.8% observed win rate, -3.9 percentage points vs expected, 796 games, 3-patch window 26.16-26.18.
  5. Zed Mid - Low Elo data: Cassiopeia Mid vs Zed Mid, 45.1% observed win rate, -2.9 percentage points vs expected, 804 games, 3-patch window 26.16-26.18.
  6. Kayn Jungle - Low Elo data: Cassiopeia Mid vs Kayn Jungle, 43.8% observed win rate, -2.8 percentage points vs expected, 905 games, 3-patch window 26.16-26.18.
  7. Tristana ADC - Low Elo data: Cassiopeia Mid vs Tristana ADC, 44.1% observed win rate, -2.6 percentage points vs expected, 940 games, 3-patch window 26.16-26.18.
  8. Fizz Mid - Low Elo data: Cassiopeia Mid vs Fizz Mid, 42.9% observed win rate, -2.2 percentage points vs expected, 560 games, 3-patch window 26.16-26.18.
  9. Viego Jungle - Low Elo data: Cassiopeia Mid vs Viego Jungle, 45.8% observed win rate, -1.7 percentage points vs expected, 906 games, 3-patch window 26.16-26.18.
  10. Malzahar Mid - Low Elo data: Cassiopeia Mid vs Malzahar Mid, 43.7% observed win rate, -1.7 percentage points vs expected, 721 games, 3-patch window 26.16-26.18.

Top 10 Low Elo all-role champions Cassiopeia is good against

  1. Sylas Mid - Low Elo data: Cassiopeia Mid vs Sylas Mid, 56.9% observed win rate, +8.9 percentage points vs expected, 668 games, 3-patch window 26.16-26.18.
  2. Warwick Jungle - Low Elo data: Cassiopeia Mid vs Warwick Jungle, 48.8% observed win rate, +3.8 percentage points vs expected, 646 games, 3-patch window 26.16-26.18.
  3. Aatrox Top - Low Elo data: Cassiopeia Mid vs Aatrox Top, 51.0% observed win rate, +3.6 percentage points vs expected, 500 games, 3-patch window 26.16-26.18.
  4. Master Yi Jungle - Low Elo data: Cassiopeia Mid vs Master Yi Jungle, 51.1% observed win rate, +3.5 percentage points vs expected, 769 games, 3-patch window 26.16-26.18.
  5. Leona Support - Low Elo data: Cassiopeia Mid vs Leona Support, 48.9% observed win rate, +3.5 percentage points vs expected, 904 games, 3-patch window 26.16-26.18.
  6. Locke Mid - Low Elo data: Cassiopeia Mid vs Locke Mid, 51.8% observed win rate, +2.7 percentage points vs expected, 527 games, 3-patch window 26.16-26.18.
  7. Akali Mid - Low Elo data: Cassiopeia Mid vs Akali Mid, 50.7% observed win rate, +2.6 percentage points vs expected, 533 games, 3-patch window 26.16-26.18.
  8. Kai'Sa ADC - Low Elo data: Cassiopeia Mid vs Kai'Sa ADC, 49.8% observed win rate, +2.3 percentage points vs expected, 1,778 games, 3-patch window 26.16-26.18.
  9. Blitzcrank Support - Low Elo data: Cassiopeia Mid vs Blitzcrank Support, 48.8% observed win rate, +2.3 percentage points vs expected, 598 games, 3-patch window 26.16-26.18.
  10. Ahri Mid - Low Elo data: Cassiopeia Mid vs Ahri Mid, 48.4% observed win rate, +2.2 percentage points vs expected, 909 games, 3-patch window 26.16-26.18.

Top 4 High Elo Cassiopeia Mid same-role counters

  1. Syndra Mid - High Elo data: Cassiopeia Mid vs Syndra Mid, 45.9% observed win rate, -3.3 percentage points vs expected, 1,074 games, 3-patch window 26.16-26.18.
  2. Zed Mid - High Elo data: Cassiopeia Mid vs Zed Mid, 47.6% observed win rate, -1.8 percentage points vs expected, 674 games, 3-patch window 26.16-26.18.
  3. Ryze Mid - High Elo data: Cassiopeia Mid vs Ryze Mid, 52.3% observed win rate, -0.4 percentage points vs expected, 555 games, 3-patch window 26.16-26.18.
  4. Locke Mid - High Elo data: Cassiopeia Mid vs Locke Mid, 48.8% observed win rate, -0.2 percentage points vs expected, 775 games, 3-patch window 26.16-26.18.

Top 6 High Elo champions Cassiopeia Mid is good against

  1. Yone Mid - High Elo data: Cassiopeia Mid vs Yone Mid, 55.6% observed win rate, +5.0 percentage points vs expected, 604 games, 3-patch window 26.16-26.18.
  2. Sylas Mid - High Elo data: Cassiopeia Mid vs Sylas Mid, 53.5% observed win rate, +3.4 percentage points vs expected, 819 games, 3-patch window 26.16-26.18.
  3. Viktor Mid - High Elo data: Cassiopeia Mid vs Viktor Mid, 51.3% observed win rate, +1.7 percentage points vs expected, 972 games, 3-patch window 26.16-26.18.
  4. Katarina Mid - High Elo data: Cassiopeia Mid vs Katarina Mid, 49.6% observed win rate, +0.9 percentage points vs expected, 565 games, 3-patch window 26.16-26.18.
  5. Yasuo Mid - High Elo data: Cassiopeia Mid vs Yasuo Mid, 51.4% observed win rate, +0.9 percentage points vs expected, 661 games, 3-patch window 26.16-26.18.
  6. Ahri Mid - High Elo data: Cassiopeia Mid vs Ahri Mid, 49.0% observed win rate, +0.4 percentage points vs expected, 826 games, 3-patch window 26.16-26.18.

Top 10 High Elo Cassiopeia all-role counters

  1. Syndra Mid - High Elo data: Cassiopeia Mid vs Syndra Mid, 45.9% observed win rate, -3.3 percentage points vs expected, 1,074 games, 3-patch window 26.16-26.18.
  2. Hecarim Jungle - High Elo data: Cassiopeia Mid vs Hecarim Jungle, 45.9% observed win rate, -3.3 percentage points vs expected, 606 games, 3-patch window 26.16-26.18.
  3. Qiyana Jungle - High Elo data: Cassiopeia Mid vs Qiyana Jungle, 46.1% observed win rate, -3.2 percentage points vs expected, 564 games, 3-patch window 26.16-26.18.
  4. Pyke Support - High Elo data: Cassiopeia Mid vs Pyke Support, 47.5% observed win rate, -3.0 percentage points vs expected, 575 games, 3-patch window 26.16-26.18.
  5. Tristana ADC - High Elo data: Cassiopeia Mid vs Tristana ADC, 44.8% observed win rate, -2.9 percentage points vs expected, 910 games, 3-patch window 26.16-26.18.
  6. Leona Support - High Elo data: Cassiopeia Mid vs Leona Support, 45.4% observed win rate, -2.5 percentage points vs expected, 738 games, 3-patch window 26.16-26.18.
  7. Talon Jungle - High Elo data: Cassiopeia Mid vs Talon Jungle, 45.8% observed win rate, -2.0 percentage points vs expected, 709 games, 3-patch window 26.16-26.18.
  8. Caitlyn ADC - High Elo data: Cassiopeia Mid vs Caitlyn ADC, 48.8% observed win rate, -2.0 percentage points vs expected, 1,070 games, 3-patch window 26.16-26.18.
  9. Zed Mid - High Elo data: Cassiopeia Mid vs Zed Mid, 47.6% observed win rate, -1.8 percentage points vs expected, 674 games, 3-patch window 26.16-26.18.
  10. Aatrox Top - High Elo data: Cassiopeia Mid vs Aatrox Top, 48.6% observed win rate, -1.7 percentage points vs expected, 562 games, 3-patch window 26.16-26.18.

Top 10 High Elo all-role champions Cassiopeia is good against

  1. Yone Mid - High Elo data: Cassiopeia Mid vs Yone Mid, 55.6% observed win rate, +5.0 percentage points vs expected, 604 games, 3-patch window 26.16-26.18.
  2. Sylas Mid - High Elo data: Cassiopeia Mid vs Sylas Mid, 53.5% observed win rate, +3.4 percentage points vs expected, 819 games, 3-patch window 26.16-26.18.
  3. Yunara ADC - High Elo data: Cassiopeia Mid vs Yunara ADC, 52.4% observed win rate, +3.3 percentage points vs expected, 1,087 games, 3-patch window 26.16-26.18.
  4. Rell Support - High Elo data: Cassiopeia Mid vs Rell Support, 49.9% observed win rate, +2.4 percentage points vs expected, 565 games, 3-patch window 26.16-26.18.
  5. Viego Jungle - High Elo data: Cassiopeia Mid vs Viego Jungle, 53.6% observed win rate, +2.3 percentage points vs expected, 771 games, 3-patch window 26.16-26.18.
  6. Lucian ADC - High Elo data: Cassiopeia Mid vs Lucian ADC, 53.0% observed win rate, +2.1 percentage points vs expected, 826 games, 3-patch window 26.16-26.18.
  7. Zeri ADC - High Elo data: Cassiopeia Mid vs Zeri ADC, 49.2% observed win rate, +1.8 percentage points vs expected, 514 games, 3-patch window 26.16-26.18.
  8. Viktor Mid - High Elo data: Cassiopeia Mid vs Viktor Mid, 51.3% observed win rate, +1.7 percentage points vs expected, 972 games, 3-patch window 26.16-26.18.
  9. Braum Support - High Elo data: Cassiopeia Mid vs Braum Support, 49.1% observed win rate, +1.5 percentage points vs expected, 517 games, 3-patch window 26.16-26.18.
  10. Kai'Sa ADC - High Elo data: Cassiopeia Top vs Kai'Sa ADC, 54.1% observed win rate, +1.5 percentage points vs expected, 586 games, 3-patch window 26.16-26.18.