PatchImpact
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Cassiopeia Patch History

Trending down — 3 of the last 3 changes were nerfs.

Every tracked buff, nerf and adjustment for Cassiopeia, newest first — with the exact numbers from each patch. Latest change in Patch 26.20.

Updated

4Buffs
4Nerfs
0Adjustments

Change Timeline

  1. Patch 26.20

    NerfOct 6, 2026

    Cassiopeia's base health and mana have been reduced.

    Base Stats

    • Base Health: 630 ⇒ 610
    • Base Mana: 480 ⇒ 450
    Patch 26.20 details

  2. Patch 26.18

    NerfSep 9, 2026

    Cassiopeia's laning power has been reduced.

    Passive - Serpentine Grace

    • Move Speed Bonus: 6% - 40% (based on level) ⇒ 5% - 36% (based on level)

    Q - Noxious Blast

    • Damage: 75 / 110 / 145 / 180 / 215 ⇒ 65 / 100 / 135 / 170 / 205

    E - Twin Fang

    • Mana Cost: 40 ⇒ 45

    R - Petrifying Gaze

    • Damage: 150 / 250 / 350 ⇒ 125 / 225 / 325
    Patch 26.18 details

  3. Patch 26.13

    NerfJun 23, 2026

    Cassiopeia's health per level has been reduced.

    Base Stats

    • Health per level: 104 ⇒ 98
    Patch 26.13 details

  4. Patch 26.7

    BuffMar 31, 2026

    Increased base mana and E damage.

    Base Stats

    • Base Mana: 450 ⇒ 480

    E - Twin Fang

    • Bonus Magic Damage: 20 / 43 / 66 / 89 / 112 ⇒ 20 / 45 / 70 / 95 / 120
    Patch 26.7 details

  5. Patch 26.6

    BuffMar 17, 2026

    Increased base mana and damage on E - Twin Fang.

    • Base Mana: 450 ⇒ 480
    • Bonus Magic Damage to Poisoned Targets: 20 / 43 / 66 / 89 / 112 ⇒ 20 / 45 / 70 / 90 / 120
    Patch 26.6 details

  6. Patch 26.1

    BuffJan 7, 2026

    Increased base movement speed and improved passive movement speed buff effectiveness.

    Base Stats

    • Base Movement Speed: 328 ⇒ 335

    Passive - Serpentine Grace

    • Increased effectiveness of all Movement Speed buffs by 6-40% (based on level).
    Patch 26.1 details

  7. Patch 25.18

    BuffSep 9, 2025

    Cassiopeia received a mana increase and a damage buff to her E ability against poisoned targets.

    Base Stats

    • Base Mana: 400 ⇒ 450

    E - Twin Fang

    • Base Damage vs Poisoned Targets: 20 / 40 / 60 / 80 / 100 ⇒ 20 / 43 / 66 / 89 / 112
    Patch 25.18 details

  8. Patch 14.15

    NerfJul 30, 2024

    Changes to mana costs and damage reductions across abilities.

    Base Stats

    • Base Mana increased but growth decreased.

    Q - Noxious Blast

    • Damage reduced.

    W - Miasma

    • Mana cost decreased.

    E - Twin Fang

    • Damage decreased.
    Patch 14.15 details

Cassiopeia FAQ

Was Cassiopeia buffed or nerfed in Patch 26.20?
Cassiopeia was nerfed in Patch 26.20 (Base Health 630→610).
What changed for Cassiopeia in Patch 26.20?
Base Health 630→610. Every number is quoted verbatim from the official Patch 26.20 notes.
When was Cassiopeia's last change?
Patch 26.20, released 6 October 2026.
How many times has Cassiopeia been changed?
Cassiopeia has changed 8 times in the patches we track, from Patch 14.15 to Patch 26.20 — 4 buffs, 4 nerfs and 0 adjustments.