Serylda's Grudge: change history

1. Aug 25, 2026League of Legends Patch 26.17Buff 2Official notes ↗
   Buff

   Arena Slow Threshold

   Slow threshold on Serylda's Grudge increases from 50% to 60%.

   50%→60%

   Source line

   Slow Threshold: 50% → 60%

   Buff

   Arena Armor Penetration

   Armor penetration on Serylda's Grudge increases from 40% to 45%.

   40%→45%

   Source line

   Armor Penetration: 40% → 45%

2. Jun 9, 2026League of Legends Patch 26.12Buff 3Official notes ↗
   Buff

   Arena Attack Damage

   Attack damage on Serylda's Grudge increases from 40 to 50.

   40→50

   Source line

   Attack Damage: 40 → 50

   Buff

   Arena Ability Haste

   Ability haste on Serylda's Grudge increases from 10 to 15.

   10→15

   Source line

   Ability Haste: 10 → 15

   Buff

   Arena Slow Amount

   Slow amount on Serylda's Grudge increases from 30% to 50%.

   30%→50%

   Source line

   Slow Amount: 30% → 50%

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.