Master Yi: change history

1. Sep 22, 2026League of Legends Patch 26.19Buff 1Official notes ↗
   Buff

   Summoner's Rift Q - Alpha Strike · Cooldown Refund on Hit

   The cooldown refund on hit from Master Yi's Alpha Strike (Q) is now a flat 1 second instead of scaling down with Ability Haste.

   -1s, scaling down with ability haste→1s

   Source line

   Cooldown Refund on Hit: -1 second, scaling down with Ability Haste → 1 second

2. Sep 9, 2026League of Legends Patch 26.18Buff 2Official notes ↗
   Buff

   Summoner's Rift Base Stats · Armor Growth

   Master Yi's armor growth increases from 33 + 4.5 per level to 33 + 5 per level.

   33 + 4.5 per level→33 + 5 per level

   Source line

   Armor Growth: 33 + 4.5/Level → 33 + 5/Level

   Buff

   Summoner's Rift R - Highlander · Move Speed

   Move speed on Master Yi's Highlander (R) increases from 35 / 45 / 55% to 40 / 50 / 60%.

   35 / 45 / 55%→40 / 50 / 60%

   Source line

   Move Speed: 35 / 45 / 55% → 40 / 50 / 60%

3. May 27, 2026League of Legends Patch 26.11Nerf 3Official notes ↗
   Nerf

   Arena R Duration

   Master Yi's R duration decreases from 7 to 5.

   7→5

   Source line

   R Duration: 7 → 5

   Nerf

   Arena Refresh Duration

   Master Yi's refresh duration decreases from 7 to 5.

   7→5

   Source line

   Refresh Duration: 7 → 5

   Nerf

   Arena Cooldown refund

   Master Yi's cooldown refund decreases from 70% to 50%.

   70%→50%

   Source line

   Cooldown refund: 70% → 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.