Kayn (Shadow Assassin): change history

1. Jun 23, 2026League of Legends Patch 26.13Buff 3Official notes ↗
   Buff

   Arena Combat Empowered Duration

   Shadow Assassin Kayn's combat-empowered duration increases from 3s to 4s.

   3s→4s

   Source line

   Combat Empowered Duration: 3s → 4s

   Buff

   Arena Bonus Magic Damage

   Shadow Assassin Kayn's bonus magic damage increases from 20–40% to 35–55%.

   20–40%→35–55%

   Source line

   Bonus Magic Damage: 20 - 40% → 35 - 55%

   Buff

   Arena Out of Combat Requirement

   Shadow Assassin Kayn's out-of-combat requirement drops from 8s to 4s.

   8s→4s

   Source line

   Out of Combat Requirement: 8s → 4s

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.