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League of Legends Patch 10.17 was released on Aug 19, 2020. This update included changes to 12 champions, with 5 buffs, 6 nerfs, 1 adjustment.
R Bonus damage ratio increased later.
World Ender
- •Bonus attack damage increased to 20/30/40% AD from 20/25/30% AD.
Base AD growth increased. E bonus AS increased later.
Stats
- •Attack damage growth increased to 2 from 1.7.
Supercharge
- •Bonus attack speed increased to 40/50/60/70/80% from 40/45/50/55/60%.
Base AS growth increased.
Stats
- •Attack speed growth increased to 4% from 3%.
Living Vengeance
- •Bonus attack speed ratio on champion takedown increased to 30 to 35.1% (based on level) bonus attack speed from 30% bonus attack speed from non-growth sources at all levels.
- •Bonus attack speed ratio on non-champion kill increased to 15 to 17.55% (based on level) bonus attack speed from 15% bonus attack speed from non-growth sources at all levels.
Q dart and spike base damage decreased.
Hate Spike
- •Dart base damage reduced to 25/30/35/40/45 from 30/35/40/45/50.
- •Spike base damage reduced to 25/30/35/40/45 from 30/35/40/45/50.
E bonus movement speed maximum reduced.
Devastating Charge
- •Bonus movement speed reduced to 25 to 85% (based on time active) from 25 to 100% (based on time active).
W bonus AD ratio decreased. E base damage decreased later.
Terrashape
- •Bonus AD ratio reduced to 10% bonus AD from 20%.
Audacity
- •Base damage reduced to 60/90/120/150/180 from 60/95/130/165/200.
Base health and mana decreased. Q damage ratio decreased. W heal ratio decreased. E self and aura bonus movement speed decreased.
Stats
- •Base health reduced to 480 from 482.36.
- •Base mana reduced to 340 from 340.6.
Hymn of Valor
- •Active AP ratio reduced to 40% AP from 50% AP.
Aria of Perseverance
- •Heal AP ratio reduced to 20% AP from 25% AP.
Song of Celerity
- •Self bonus movement speed AP ratio reduced to 2% per 100 AP from 3% per 100 AP.
- •Ally bonus movement speed AP ratio reduced to 2% per 100 AP from 3% per 100 AP.
Q base damage decreased later. R no longer applies life steal.
Mortal Steel
- •Base damage reduced to 20/40/60/80/100 from 20/45/70/95/120.
Fate Sealed
- •Removed: No longer benefits from lifesteal.
W shield decreased; mana cost no longer static and increased; fixed a bug where W would apply three times.
Prismatic Barrier
- •Base shield reduced to 45/65/85/105/125 from 50/75/100/125/150.
- •AP ratio increased to 35% AP from 30% AP.
- •Mana cost increased to 60/65/70/75/80 from 60 at all ranks.
- •Bug Fix: No longer grants bonus shielding at the edge.

Aatrox
Gragas
Kai'Sa
Varus
Xayah
Caitlyn
Evelynn
Hecarim
Qiyana
Sona
Yone
Lux