League of Legends patch 25.17 notes: Gwen nerfs, Yunara adjustments, and more

The League of Legends 25.17 patch notes were out on August 27, 2025. It is the first update of season 3, and the regular Summoner's Rift map is now back on the live server. Along with that, Vayne and Sett are now buffed enough to be strong as junglers. There are a few balance updates as well, largely following up on other recent changes.

Here is more information regarding the adjustments made in the League of Legends patch 25.17.

Champion buffs in League of Legends patch 25.17

All changes in League of Legends patch 25.17 (Image via Riot Games)

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1) Irelia

W - Defiant Dance

Minimum Damage: 10 / 20 / 30 / 40 / 50 (+ 40% AD) (+ 40% AP) ⇒ 10 / 20 / 30 / 40 / 50 (+ 40% AD) (+ 50% AP)
Maximum Damage: 30 / 60 / 90 / 120 / 150 (+ 120% AD) (+ 120% AP) ⇒ 30 / 60 / 90 / 120 / 150 (+ 120% AD) (+ 150% AP)

E - Flawless Duet

Cooldown: 16 / 15 / 14 / 13 / 12 ⇒ 16 / 14.5 / 13 / 11.5 / 10
Damage: 70 / 110 / 150 / 190 / 230 (+ 80 AP) ⇒ 70 / 110 / 150 / 190 / 230 (+ 100% AP)

2) Kassadin

Q - Null Sphere

Damage: 65 / 95 / 125 / 155 / 185 (+ 60% AP) ⇒ 65 / 95 / 125 / 155 / 185 (+ 70% AP)

E - Force Pulse

Damage: 70 / 100 / 130 / 160 / 190 (+ 65% AP) ⇒ 70 / 100 / 130 / 160 / 190 (+ 70% AP)

3) Kayn

Q - Reaping Slash

Mana Cost: 50 ⇒ 40

W - Blade's Reach

Mana Cost: 60 / 65 / 70 / 75 / 80 ⇒ 40 / 45 / 50 / 55 / 60

4) Kog'Maw

Q - Caustic Spittle

Damage: 80 / 125 / 170 / 215 / 260 (+ 80% AP) ⇒ 80 / 125 / 170 / 215 / 260 (+ 90% AP)

W - Bio-Arcane Barrage

Damage On-Hit: 3 / 3.75 / 4.5 / 5.25 / 6% (+ 1% per 100 AP) target max HP ⇒ 3 / 3.75 / 4.5 / 5.25 / 6% (+ 1.5% per 100 AP) target max HP

R - Living Artillery

Minimum Damage: 100 / 140 / 180 (+75% bonus AD) (+ 35% AP) ⇒ 100 / 140 / 180 (+75% bonus AD) (+ 35 / 40 / 45% AP)
Maximum damage is still doubled

5) Miss Fortune

Base Stats

Base Attack Damage: 53 ⇒ 55

6) Morgana

W - Tormented Shadow

Mana Cost: 70 / 85 / 100 / 115 / 130 ⇒ 70 / 80 / 90 / 100 / 110
Minimum Damage Per Second: 14 / 28 / 42 / 56 / 70 ⇒ 18 / 31 / 44 / 57 / 70

7) Nilah

Q - Formless Blade

Secondary damage to monsters: 10% total AD ⇒ 100% total AD

8) Senna

Base Stats

Attack Speed Growth: 2% ⇒ 2.6%

Q - Piercing Darkness

Heal: 40 / 55 / 70 / 85 / 100 (+ 40% bonus AD) (+ 50% AP) ⇒ 40 / 60 / 80 / 100 / 120 (+ 40% bonus AD) (+ 50% AP)

9) Sett

E - Facebreaker

Bonus Monster Damage: 100 ⇒ 125-250 (based on level)

10) Vayne

W - Silver Bolts

Monster Damage: 6 / 7 / 8 / 9 / 10% max HP, capped at 200 ⇒ 140 / 155 / 170 / 185 / 200 damage regardless of health

Also read: League of Legends patch 25.16 notes

Champion nerfs in League of Legends patch 25.17

1) Gwen

Base Stats

Armor: 36 ⇒ 33
Attack Speed Growth: 2.25% ⇒ 2.5%

R - Needlework

Initial Slow: 60% ⇒ 30 / 45 / 60%
Subsequent Slows: 25% ⇒ 15 / 20 / 25%

2) Master Yi

Base Stats

Base Health: 669 ⇒ 655

Q - Alpha Strike

On-hit damage modifier: 75% ⇒ 65%

3) Rumble

Passive - Junkyard Titan

Overheated Damage: 5-40 (+ 25% AP) + 5% target max HP ⇒ 5-40 (+ 25% AP) (+ 4% target max HP)

Q - Flamespitter

Damage Over 3 Seconds: 60 / 90 / 120 / 150 / 180 (+ 100% AP) + 6 / 6.5 / 7 / 7.5 / 8% target max HP ⇒ 60 / 85 / 110 / 135 / 160 (+ 100% AP) + 6 / 6.5 / 7 / 7.5 / 8% target max HP

4) Singed

Q - Poison Trail

Duration: 2.2s ⇒ 2s
Max damage ticks per application: 9 ⇒ 8

Champion adjustments in League of Legends patch 25.17

1) Teemo

R - Noxious Trap

Trap Opacity: 30% ⇒ 50%

2) Yunara

Q - Cultivation of Spirit

Fixed a bug where sometimes the bounce could trigger multiple stacks per bounce for some items. It's intended for Yunara to build 1 stack per bounce.
Fixed an issue where sometimes items would fail to do damage on Q bounces in situations where a significant number of bounces were taking place.
Fixed an issue where items like Runnan's Hurricane were dealing full on-hit damage when bouncing from the secondary target to the primary target, triggering the full-on hit value multiple times in a single auto.
Fixed an issue where Runnan's Hurricane bolts were having their on-hit damage reduced incorrectly and will now apply the full on-hit damage correctly.

System changes in League of Legends patch 25.17

Item changes

1) Axiom Arc

Total Gold Cost: 3000 ⇒ 2750

2) Horizon Focus

Ability Power: 115 ⇒ 125
Total Gold Cost: 2800 ⇒ 2750
Recipe: Fiendish Codex + Fiendish Codex + Blasting Wand + 250 Gold ⇒ Fiendish Codex + Fiendish Codex + Blasting Wand + 200 Gold

3) Profane Hydra

Attack Damage: 60 ⇒ 55
Total Gold Cost: 3200 ⇒ 2850
Recipe: Tiamat + The Brutalizer + 663 Gold ⇒ Tiamat + The Brutalizer + 313 Gold

And that covers everything about the League of Legends patch 25.17 notes that went live on August 27, 2025.

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About the author

Debayan is a gaming journalist and he specializes in League of Legends content but also pens game reviews for the website.
His fascination with video games began with the Fable series and to this day, he occasionally takes nostalgic strolls around the idyllic Oakvale village. If given a chance to inhabit a game world, he would eagerly jump into Cyberpunk 2077’s Night City and its neon-drenched streets.
Debayan is a big fan of T1's League of Legends team and Danish CS pro Nicolai “dev1ce” Reedtz.

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Edited by Debayan Saha