Nerf Radar › League of Legends › History › Senna
League of Legends

Senna: change history

10 changes across 5 patches (Jun 23, 2026 to Sep 22, 2026), newest first. Nerf Radar tracks the 10 most recent official updates for League of Legends, back to May 27, 2026.
Buff 3Nerf 5Adjust 1New 1
Search all mentions →
  1. League of Legends Patch 26.19New 1Official notes ↗
    New
    Arena
    Senna joins Arena as a Guest of Honor.
    Source line
    NEW Senna
    • Opens up 3 portals to the Death Realm. Anyone can enter the portal to go to the Death Realm. While in the Death Realm, you can go through any of the portals to return to the living realm.
  2. League of Legends Patch 26.17Buff 1Official notes ↗
    Buff
    Arena Q - Piercing Darkness · Damage Bonus Attack Damage Ratio
    Bonus AD ratio on the damage of Senna's Piercing Darkness (Q) increases from 60% to 75%.
    60%→75%
    Source line
    Damage Bonus Attack Damage Ratio: 60% → 75%
  3. League of Legends Patch 26.15Buff 1Official notes ↗
    Buff
    ARAM: Mayhem Damage Dealt
    Senna's damage dealt increases from 97% to 100%.
    97%→100%
    Source line
    Damage Dealt: 97% → 100%
  4. League of Legends Patch 26.14Nerf 3Official notes ↗
    Nerf
    Summoner's Rift Passive - Absolution · Critical Strike Damage Modifier
    Critical strike damage modifier on Senna's Absolution (Passive) decreases from 85% to 80%.
    85%→80%
    Source line
    Critical Strike Damage Modifier: 85% → 80%
    Nerf
    Summoner's Rift Q - Piercing Darkness · Ability Power Slow Ratio
    Ability power slow ratio on Senna's Piercing Darkness (Q) decreases from 10% per 100 ability power to 7% per 100 ability power.
    10% per 100 ability power→7% per 100 ability power
    Source line
    Ability Power Slow Ratio: 10% per 100 Ability Power → 7% per 100 Ability Power
    Nerf
    Summoner's Rift Q - Piercing Darkness · Ability Power Healing Ratio
    Ability power healing ratio on Senna's Piercing Darkness (Q) decreases from 50% ability power to 35% ability power.
    50% ability power→35% ability power
    Source line
    Ability Power Healing Ratio: 50% Ability Power → 35% Ability Power
  5. League of Legends Patch 26.13Buff 1Nerf 2Adjust 1Official notes ↗
    Nerf
    Summoner's Rift Passive - Absolution · Soul Drop Chance (Senna Kill)
    Soul drop chance from Senna's own kills on Absolution (Passive) decreases from 10% to 5%.
    10%→5%
    Source line
    Soul Drop Chance (Senna Kill): 10% → 5%
    Buff
    Summoner's Rift Passive - Absolution · Soul Drop Chance (Ally Kill)
    Soul drop chance from ally kills on Senna's Absolution (Passive) increases from 28% to 32%.
    28%→32%
    Source line
    Soul Drop Chance (Ally Kill): 28% → 32%
    Nerf
    Summoner's Rift Passive - Absolution · Crit Damage
    Crit damage on Senna's Absolution (Passive) changes from -10% (180% / 27% with IE) to -15% (170% / 25.5% with IE).
    -10% (180% / 27% with IE)→-15% (170% / 25.5% with IE)
    Source line
    Crit Damage: -10% (180% / 27% with IE) → -15% (170% / 25.5% with IE)
    Adjust
    Summoner's Rift Q - Piercing Darkness · Cooldown Refund
    Cooldown refund on Senna's Piercing Darkness (Q) now triggers on attack instead of on hit.
    On-hit→On attack
    Source line
    Cooldown Refund: On Hit → On Attack

Each step links to the full patch breakdown and to Riot Games's official notes. Changes listed under a general heading such as "Bug fixes" are not included here; search to find every mention.