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LoL 12.15 Patch Notes - Champion Adjustments, Bug Fixes & More

The League of Legends 12.15 update is releasing soon, so let's take a look at the detailed patch notes for the latest title refresh.
LoL 12.15 Patch Notes - Champion Adjustments, Bug Fixes & More

League of Legends will continue to evolve with the release of the 12.15 update. However, the latest patch isn’t entitled to bring any new features or content. Instead, the newest League of Legends update focuses on champion adjustments, bug fixes & various quality of life updates.

Riot Games have released the complete patch notes of the League of Legends 12.15 version, and you can have a look at them below.

League of Legends v12.15 patch notes

LoL 12.15 patch update
Riot Games have revealed League of Legends v12.15 changes. (Picture: Riot Games)



W - Twilight Shroud

  • Energy Restoration: 80 >>> 100

  • Max Energy Increase: 80 >>> 100


Q - Snip Snip!

  • True Damage in Center: 75% >>> 50% of damage dealt is converted to True Damage


Base Stats

  • Base Attack Damage: 69 >>> 66


W - Electrical Surge

  • Cooldown: 14/12/10/8/6 >>> 13/11.25/9.5/7.75/6

  • Magic Damage: 60/85/110/135/160 >>> 70/95/120/145/170

R - Slicing Maelstrom

  • Magic Damage Per Bolt: 40/75/110 (+20% AP) >>> 40/75/110 (+22.5% AP) 

Lee Sin 

Q - Sonic Wave/Resonating Strike

  • Resonating Strike Energy Cost: 30 >>> 25

W - Safeguard/Iron Will

  • Iron Will Energy Cost: 30 >>> 25

E - Tempest/Cripple

  • Cripple Energy Cost: 30 >>> 25 


Q - Shield of Daybreak

  • Mana Cost: 45/50/55/60/65 >>> 35/40/45/50/55

R - Solar Flare

  • Stun and Slow Duration: 1.5 >>> 1.75 seconds 


Passive - Dream-Laden Bough

  • Monster Damage Cap: 40-100 (levels 1-18) >>> 50-150 (levels 1-18)

Master Yi 

E - Wuju Style

  • Cooldown: 18/17/16/15/14 >>> 18 seconds at all ranks


Passive - Royal Privilege

  • Damage: 15-83 (levels 1-18)(+45% bonus AD)(+30%AP) >>> 15-83 (levels 1-18)(+30% bonus AD)(+30%AP)


  • Fixed a bug where Qiyana could apply an extra proc of her passive with First Strike equipped


R - Soaring Slam

  • Cooldown: 110/95/80 >>> 90 at all ranks

  • Base Cast Range: 600 >>> 800

  • Dash Range Growth: 1.3 >>> 1.5 <em>(note: this is how much the range will scale with movespeed)</em>

  • Minimum Dash Speed: 700 >>> 900

  • Maximum Dash Speed: 1800 >>> 2000


E - Shadow Dash

  • Energy Refunded upon dealing damage with Passive or E: 30/35/40 >>> 30/40/50


Passive - Noxious Slipstream

  • Bonus Movement Speed: 20% >>> 25%

  • Per-target Cooldown: 10 seconds >>> 8 seconds

R - Insanity Potion

  • Bonus Stats: 20/60/100 >>> 30/65/100


Base Stats

  • Attack Damage Growth: 3.3 >>> 3

E - Spell Shield

  • Cooldown: 22/20/18/16/14 >>> 24/22.5/21/19.5/18

R - On the Hunt

  • Cooldown: 100/85/70 >>> 120/100/80


E - Unraveled Earth

  • Cooldown: 16/15/14/13/12 seconds >>> 18/17/16/15/14 seconds 

R - Weaver’s Wall

  • Wall Duration: 5 seconds >>> 4 seconds


Q - Death Sentence

  • Cooldown: 20/18/16/14/12 >>> 19/17/15/13/11

  • Magic Damage: 80/120/160/200/240 >>> 100/140/180/220/260


W - Living Shadow

  • Shadow Spell Mimic Range: 2000 >>> No Limit

E - Shadow Slash

  • Energy Cost: 50 >>> 40


Divine Sunderer

  • Spellblade Heal: 65% >>> 55% of premitigation damage (+(4.8% melee/2.4% ranged) of target's maximum health) (+100% base AD)

Mercurial Scimitar

  • Magic Resistance: 30 >>> 40

  • Quicksilver Active Duration: 1 second >>> 1.5 seconds

Silvermere Dawn

  • Magic Resistance: 35 >>> 40

  • Quicksilver active bonus stats: 40% Tenacity and 40% slow resist >>> 50% Tenacity and 50% slow resist


First Strike

  • Bonus True Damage: 10% >>> 9%

Zaun Cup Clash

  • Team formation for the second weekend of the Zaun Cup Clash starts on August 15, and the tournament days are on August 20 and 21.

Ultimate Spellbook

  • The Star Guardian event may be ending, but Ultimate Spellbook is sticking around for a little while longer!

Champion Buffs

  • Aurelion Sol: +5% Damage Dealt, +5% Movement Speed
  • Champion Nerfs
  • Xin Zhao: -5% Damage Dealt, +5% Damage Taken
  • Ult-ernate Summoner Spells Buffs
  • Gwen R: Now has the Adaptive Force/Armor/Magic Resistance Stat Boost
  • Ult-ernate Summoner Spells Nerfs
  • Annie R: 100% AD/AP Ratios >>> 80% AD/AP Ratios
  • The following Ult-ernate Summoner Spells have been updated to match their original champion's functionality:
    • Annie R
    • Ashe R
    • Taliyah R
  • Added Star Guardian themed particles for the following Ult-ernate Summoner Spells:
    • Jhin R
    • Orianna R (also updated to match her latest VFX update)
    • Janna R
    • Miss Fortune R
    • Soraka R


  • Akali R indicator will now correctly show as on cooldown after R2 cast

  • Kaisa R now correctly functions by applying the Plasma indicator on your own auto attacks, or any of your team's Immobilizing effects. Updated tooltip to match its usage.

  • Urgot R no longer disables spell slots incorrectly when locked by other sources

  • Neeko R no longer turns the owner invisible when dying before the cast finishes

  • Ahri R no longer makes Q or W permanently free to cast

  • Fix Sylas incorrectly getting permanently stuck with Yone or Kha’Zix ultimates after stealing them

  • Annie R no longer immediately triggers Darius’s passive

  • Fix a visual issue when a transformed Kayn uses Morgana R

  • Fix Morgana R missing VFX

  • Taliyah R indicator will show as on cooldown after recast or time expiration

  • Taliyah R no longer causes a recast indicator on certain champion spells

  • Fixed missing translations in tooltips for several Ult-ernate Summoner Spells 

RP Price Increase

  • As a reminder, starting on August 19 Pacific Time, RP and TFT coin prices will increase in most Riot regions. For more information about the price increase check out our full article here.

Competitive Systems

  • Having a premade duo is a slight advantage, and while current Apex Tier (Masters, Grandmaster, and Challenger) players aren’t able to duo with anyone, the system only works off current rank. With this change, we’re tightening up the Apex Tier restriction to apply to MMR as well.

  • The goal of this is to prevent climbing smurfs from being able to duo queue into Apex Tier. That said, decayed Apex Tier players and the highest skilled Diamond I players may also be impacted by this change.

  • Up until now these players could duo and reliably get into Apex Tier games, which isn't fair when the people they're playing against can't duo. If this change works as expected, we'll evaluate shipping it to the rest of the world with plans to re-evaluate before Season Start.

  • We first rolled out this change back in patch 12.10 on the NA and KR servers as a trial and the results have been positive, so we’re rolling it out to the rest of the world. From now on, players with an MMR correlating to Master or above will no longer be able to duo queue in Ranked Solo/Duo, even if their rank is not Master or higher.

Bugfixes & QoL Changes

  • Fixed a bug where Yuumi would be unable to use swapped summoner spells from Unsealed Spellbook after using Teleport

  • Fixed a bug where Viego would look like a polymorphed champion if he killed and possessed a champion under the effects of Polymorph

  • Fixed a bug where Bel’Veth’s E - Royal Maelstrom would not cancel when casting her R - Endless Banquet on an out-of-range Void Coral

  • Fixed a bug that caused Nilah’s Passive - Perfect Synergy to be audible from the Fog of War

  • Fixed a bug that caused Nilah’s Passive - Perfect Synergy to trigger with Ocean Drake’s buff

  • Fixed a bug where Leblanc’s W - Distortion was doing slightly less damage at rank 3 than intended

  • Fixed a bug where Evelynn’s stealth would break after a target she killed entered a Zombie Form and then died again (e.g. Sion’s Passive)

  • Fixed a bug where single target range indicators would sometimes follow enemies through the Fog of War

  • Fixed a bug where Rakan would automatically cast his second E - Battle Dance to an ally after using Flash

  • Fixed a bug where Yone could activate abilities while in his Spirit Form while locked in the blast cone knockback cc

  • Fixed a bug where Liandry’s Lament’s burn effect was not working correctly

  • Fixed a bug where Blade of the Ruined King was doing less damage if it was purchased after other items

  • Fixed a bug where Swain’s second E - Nevermove could pull targets that were in Stasis

  • Fixed a bug where Rift Herald would not charge at towers if it spawned next to them 

Upcoming Skins & Chromas

  • The following skins will be released in this patch:

    • Monster Tamer Lulu

    • Monster Tamer Veigar

    • Zap'Maw

  • The following chromas will be released this patch:

    • Monster Tamer Lulu

    • Monster Tamer Veigar

    • Zap'Maw

LoL 12.15 patch update news
Enjoy all of the exciting changes coming as part of the LoL v12.15 update! (Picture: Riot Games)

That's everything you need to know about the exciting LoL 12.15 patch update.

Don't forget to check out our dedicated League of Legends section for all the latest news, guides, updates, esports coverage, and more.


Featured image courtesy of Riot Games.