Update 25.17 has brought a multitude of changes: the return of the standard Summoner's Rift map, the return of the "Nightmare Bots" mode, a rework of Xin Zhao, a new battle pass, improvements to game information tracking mechanics, and numerous bug fixes. 

New Battle Pass and Rewards

With the start of the third season in League of Legends, a new battle pass has arrived! Among its rewards are Arcana Lulu skins, Arcana Jhin, Prestige Jarvan IV Vision of the Fallen, emotes, icons, and much more. For the first time, the battle pass reflects a change from 50 to 48 levels, while the experience per level remains the same, making it slightly quicker to complete. You can learn more about the battle pass rewards by following this link.

Start of the Third Ranked Season

The third ranked season kicks off on August 27 at 12:00 local time. LP and progress towards the next rank will not be reset, only the quest for obtaining the victorious skin (15 wins in ranked matches) will be updated. Ranked games will be unavailable for approximately 12 hours, and rewards for the end of the second season will appear a few days after the start of the third.

Atahan's Change

Atahan now has a weapon, affecting only the visual aspect, with no mechanical changes.

Xin Zhao Visual Update

The "Commando Xin Zhao" and "Imperial Xin Zhao" skins have increased in price from 520 RP to 750 RP. A new music theme will be released on August 29, and champion pages in the Universe have been updated to reflect the events of 2025 and previous seasons.

Return of the "Nightmare Bots" Mode

The PvE mode returns with a new boss Veigar, curses, and nightmare challenges. Players who successfully complete all challenges will earn the title "Not a Bot at All."

Improved Match Information Tracking

Timers for monster camps have been added to the mini-map in both basic and advanced versions. The damage summary and summoner spell tracking have been improved.

Champion Changes

Gwen

Base Stats

• Armor: 36 ⇒ 33.
• Attack speed growth: 2.25% ⇒ 2.5%.

Needlework [R]

• Slow on first hit: 60% ⇒ 30/45/60%.
• Slow on subsequent hits: 25% ⇒ 15/20/25%.

Irelia

Defiant Dance [W]

• Minimum damage: 10/20/30/40/50 (+40% attack power) (+40% ability power) ⇒ 10/20/30/40/50 (+40% attack power) (+50% ability power).
• Maximum damage: 30/60/90/120/150 (+120% attack power) (+120% ability power) ⇒ 30/60/90/120/150 (+120% attack power) (+150% ability power).

Flawless Duet [E]

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

Kassadin

Null Sphere [Q]

• Damage: 65/95/125/155/185 (+60% ability power) ⇒ 65/95/125/155/185 (+70% ability power).

Force Pulse [E]

• Damage: 70/100/130/160/190 (+65% ability power) ⇒ 70/100/130/160/190 (+70% ability power).

Kayn

Reaping Slash [Q]

• Mana cost: 50 ⇒ 40.

Blade's Reach [W]

• Mana cost: 60/65/70/75/80 ⇒ 40/45/50/55/60.

Kog'Maw

Caustic Spittle [Q]

• Damage: 80/125/170/215/260 (+80% ability power) ⇒ 80/125/170/215/260(+90% ability power).

Bio-Arcane Barrage [W]

• On-hit damage: 3/3.75/4.5/5.25/6% (+1% per 100 ability power) of the target's maximum health ⇒ 3/3.75/4.5/5.25/6%(+1.5% per 100 ability power) of the target's maximum health.

Living Artillery [R]

• Minimum damage: 100/140/180 (+75% bonus attack power) (+35% ability power) ⇒ 100/140/180 (+75% bonus attack power) (+35/40/45% ability power).
• Maximum damage remains twice the minimum damage.

Master Yi

Base Stats

• Health: 669 ⇒ 655.

Alpha Strike [Q]

• On-hit effect damage modifier: 75% ⇒ 65%.

Miss Fortune

Base Stats

• Attack power: 53 ⇒ 55.

Morgana

Tormented Shadow [W]

• 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.

Nilah

Formless Blade [Q]

• Damage to secondary targets against monsters: 10% of total attack power ⇒ 100% of total attack power.

Rumble

Junkyard Titan (Passive)

• Overheat damage: 5–40 (+25% ability power) + 5% of the target's maximum health ⇒ 5–40 (+25% ability power) (+4% of the target's maximum health).

Flamespitter [Q]

• Damage over 3 seconds: 60/90/120/150/180 (+100% ability power) + 6/6.5/7/7.5/8% of the target's maximum health ⇒ 60/85/110/135/160 (+100% ability power) + 6/6.5/7/7.5/8% of the target's maximum health.

Senna

Base Stats

• Attack speed growth: 2% ⇒ 2.6%.

Piercing Darkness [Q]

• Healing: 40/55/70/85/100 (+40% bonus attack power) (+50% ability power) ⇒ 40/60/80/100/120 (+40% bonus attack power) (+50% ability power).

Sett

Haymaker [W]

• Additional damage to monsters: 100 ⇒ 125–250 (based on level).

Singed

Poison Trail [Q]

• Duration: 2.2 sec ⇒ 2 sec.
• Maximum procs on application: 9 ⇒ 8.

Teemo

Noxious Trap [R]

• Trap opacity: 30% ⇒ 50%.

Vayne

Silver Bolts [W]

• Damage to monsters: 6/7/8/9/10% of maximum health (max 200) ⇒ 140/155/170/185/200 damage regardless of health.

Yone

Spirit Cleave [Q]

• Fixed a bug where items could gain multiple stacks from a bounce. Yone should get 1 stack per bounce.
• Fixed a bug where items could fail to deal damage on a [Q] bounce in situations with many consecutive bounces. 
• Fixed a bug where items like Runaan's Hurricane dealt full on-hit damage when projectiles bounced from a secondary target to the original, allowing multiple full on-hit damage instances per auto attack.
• Fixed a bug where Runaan's Hurricane projectile on-hit damage was incorrectly reduced.

Item Changes

Axiom Arc

• Total cost: 3000 gold ⇒ 2750 gold.

Hextech Rocketbelt

• Ability power: 115 ⇒ 125.
• Total cost: 2800 gold ⇒ 2750 gold.
• Recipe: Fiendish Codex + Fiendish Codex + Blasting Wand + 250 gold ⇒ Fiendish Codex + Fiendish Codex + Blasting Wand + 200 gold.

Ravenous Hydra

• Attack power: 60 ⇒ 55.
• Total cost: 3200 gold ⇒ 2850 gold.
• Recipe: Tiamat + Pickaxe + 663 gold ⇒ Tiamat + Pickaxe + 313 gold.

Return of Mythic Skins

The return of Sanctuary items: mythic variants and Battle Bunny Admiral Miss Fortune. Archived "Nightmare Bots" skins are now available until the end of update 25.20. Special chromas will be available in the mythic shop for 35 mythic essence.

Bug Fixes and Quality of Life Enhancements

• Custom Game Mode: Fixed the "Play Again" button, voice chat, and mode switching without a new lobby.
• New sound effects for swapping pick/role order.
• Updated tower visual effects.
• Honor level-up simplified.
• Numerous bugs affecting abilities, client, and store have been fixed.

In addition to all the changes in update 25.17, new skins will be added to the game — Prestige Jarvan IV Vision of the Fallen, Tryndamere Vision of the Fallen, Garen Vision of the Fallen, Spirit Blossom Alistar, Arcana Lulu, and Arcana Jhin.

Thus, patch 25.17 marks an important step in the development of League of Legends: the changes will refresh the meta, fix old issues, add new visual skins, and prepare players for the start of the third ranked season.