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Patch Notes v4.15
"Hey Summoners,

"Welcome to patch 4.15. While we don't have a whole lot of balance changes going on, wedo have a number of bugfixes and clarity tweaks to smooth out the patch path leading to the World Championships. Also, with so many things going into previous patches (looking at you, 4.13 and 4.14), we also wanted to really see what a stable landscape looks like in League of Legends. There are a number of small buffs for Gnar, but they're more focused as 'feel' improvements to get him in the best possible place (although they're undeniably buffs!). Check out his context for more information!

For features outside of balance, however, there's a lot going on! First up, check out that newly revamped client patcher & landing page. These two visual updates represent phase one of our ongoing development process to improve your pre-game League of Legends experience. There's a lot of nuance that goes into introducing new, stable technology, so be sure to read [dev blog on what's going on behind the scenes].

Next, there's the introduction of the new Master Tier! Snuggled comfortably between Diamond 1 and the Challenger Tier, the new Master Tier will offer more competitive visibility between top players in your region. The introduction of Master Tier also means that Challenger rankings will rotate on a 24-hour schedule with no immunity, so now's the time to hit the ranked gym!

Final note! As we near final polish on a few parts of Summoner's Rift, we're going to start patching those finished pieces to the live environment. This's being done to minimize the size of the eventual Summoner's Rift launch patch so you all don't end up with massive downloads on the day we go live. In other words, this doesn't mean you'll be able to play on those shipped pieces - and we still don't have an official release date! - just that they'll be pre-emptively sitting on your hard drives. Thanks! "

And that's all for today! Check out all of our patch notes below for the full details!

- Poro.jpgChris "Pwyff" Tom

Patcher & Landing Page Refresh

"We're launching our visual refresh of the patcher and landing page along with the first bits of our new technology in the patcher, which we'll be applying to the rest of the client over time. A few highlights are listed below, but make sure to [to our previous article] if you'd like a deeper dive into these changes.
As a reminder, the patcher and landing page updates are just the first phase of an iterative development process. They represent a foundation we're confident we can safely build on, and we're looking forward to improving other parts of the client over time with what we've learned from developing these releases!"

PatchNotes Patcher.jpg PatchNotes Launcher.jpg

  • NEW LOOK The patcher and landing page have been updated with a new layout
  • NEW PAINT The client frame, friend list, notifications panel and chat windows have all received fresh coats of paint as well
  • STREAMLINING Patching progress has been condensed into a single bar
  • STAY INFORMED Ticker notifications are now readable in the patcher



"When we buffed Alistar back in 4.12, our big concern for competitive play was that he would be too strong in the jungle, where his terrifying level 2 ganks would obliterate all semblance of lane safety on the map. Didn't happen! He just went to terrorize top lane instead.
Jokes aside, it's not a bad thing when a champion finds a new position to play on the map, but often times we'll see their strength being used in inhibitive ways (hello Soraka, hello Lulu). We're not taking large steps against Alistar for now, but we did identify one very obnoxious aspect of his strength where he could get a free high-damage trade by Headbutting his opponent while also sneaking in a basic attack. When combined with next-attack items like Sheen, it's easy to see how uninteractive Alistar can get, especially when he puts the opponent in a position where they can't retaliate in a meaningful way. We still think Alistar's in a very strong place after his buffs, but will continue to monitor him for the future."
  • Headbutt.png W - Headbutt
    • SUCKER PUNCH Alistar can no longer land an additional basic attack on his Headbutted target as they fly away


"Part one of three."
  • General
    • BUGFIX Fixed a bug where abilities that give true sight of enemy champions would reveal stealth wards under certain circumstances

We're fixing a bug with Fiddlesticks that got introduced in 4.14 where his drain would occasionally break by one tick.

"It's important to note that the Drain bug introduced in 4.14 was cutting off only one or two drain ticks if the opponent ran away to break the tether. It's not to say that this was a light issue (it was definitely a power reduction and an awkward 'feel' change for Fiddlesticks masters), but we just wanted to clarify the impact this had. To fix this, we actually re-coded certain aspects of Drain, but it should feel the same as 4.14."
  • Drain.jpg W - Drain
    • A VERY ODD BUG Fixed a bug where Fiddlesticks' Drain tether would occasionally snap prematurely if an opponent moved out of a specific range within a certain window of time. The below two changes should maintain the old Fiddlesticks Drain feeling of pre-4.13, but since we've re-scripted parts of the ability (to fix the bug), we figured we should document it.
    • DRAIN TETHER RANGE Drain's tether now has a range of 750 ⇒ 800
    • DRAIN REFRESH RATE Drain now updates every 0.5 seconds ⇒ 0.25 seconds (overall damage remains unchanged)


"We're documenting the collateral in Collateral Damage (this is now the third time we have used this joke)."
  • CollateralDamage.jpg R - Collateral Damage
    • UNDOCUMENTED BUFF Back in patch 4.13, we increased the damage of Collateral Damage but forgot to mention that this would also buff Collateral Damage's Explosion Damage to 200/280/360 ⇒ 200/320/440. There is no functional change from 4.13, but we're just documenting it.

Gnar gets his bonus health immediately on transforming (rather than slightly delayed). Boomerang works more logically and its width, speed, and return indicators have all been improved. Boulders now get picked up and thrown faster, and they fly faster. GNAR! has an AP ratio (but please, for your sake, don't try AP Gnar).

"We've been keeping a close eye on Gnar during the past two weeks, and while we try not to make major changes during big learning periods, we did see the opportunity to improve some of his play patterns. In other words, while these are definitely buffs, they're more 'spritual improvements' that we'd like to do regardless of power. So even if Gnar ends up being too strong (or too weak), these are changes we're making to get him to feel better, and future tuning points would be unrelated."
  • General
    • SO MANY POSSIBILITIES Recommended items have been updated
    • BASE HEALTH REGEN 3 health regen per 5 seconds ⇒ 5 health regen per 5 seconds
  • Passive - Rage Gene
    • GROWTH SPURT Fixed a bug where Gnar wouldn't get his bonus health immediately on transforming
  • Boomerang Throw.png Q - Boomerang Throw
    • NEW THAT'S A SMART BOOMERANG Boomerang's return logic has been improved to better track Gnar
    • OUTGOING WIDTH 45 ⇒ 60
    • RETURN WIDTH 70 ⇒ 75
    • MINIMUM SPEED 1000 ⇒ 1400
    • BOOMERANG CLARITY Boomerang's return particles have been improved!
  • Boulder Toss.png Q - Boulder Toss
    • BODY BLOCK Boulder now checks to see if any enemy champions are standing really close to Gnar's center point when he casts (and it now hits them)
    • SHRAPNEL Boulder now does its area-effect damage in a small radius on landing if it hits no enemies
    • BOULDER SPEED 2000 ⇒ 2100
    • BOULDER WIDTH 80 ⇒ 90
    • GOOD FORM, GNAR Gnar takes 0.5 seconds ⇒ 0.3 seconds to pick up a Boulder before he throws it
  • Wallop.png W - Wallop
    • WHOOPS Fixed a bug where enemies could sometimes cast spells when Wallop's stun was overlapped with GNAR!'s stun
  • GNAR.png GNAR! (R)
    • NEW MAGICAL GNAR Now scales with 0.0 AP ⇒ 0.5 AP
    • RELIABLE GNAR! Fixed a bug where GNAR!'s knockback ministun (not the wall stun) would sometimes be removed too early
    • GNAR SO STRONG Gnar now move and perform actions after casting GNAR! in 0.5 ⇒ 0.4 seconds

Lee SinSquare.pngLee Sin

"Part two of three. Around here is where most would make a joke about Lee Sin being blind. We will not."
  • General
    • BUGFIX Fixed a bug where abilities that give true sight of enemy champions would reveal stealth wards under certain circumstances

Many Rumble bug fixes.

"Heat management is what separates the good Rumbles from the great Rumbles, so when we heard of bugs that punish Rumble for playing at his best (and a few that reward him when he shouldn't be), we felt we needed to act. That said, some of these changes might be a significant buff to Rumble's power, and that'll be something we'll need to keep a close eye on."
  • General
    • RESPONSIVE RUMBLE Fixed a bug where Rumble's Flamespitter and Scrap Shield should be more responsive in being affected (or not affected) by Danger Zone bonuses even if they're cast immediately after going above or below 50 heat
    • PROPER VENTILATION Fixed a bug where Rumble's basic attack would cancel if he was in the middle of attacking while Overheat expired
    • PUNCHING UNDER FIRE Fixed a bug where Rumble would occasionally not receive bonus magic damage on his first basic attack during Overheat
    • TOO HOT TO HIDE Fixed a bug where Rumble wouldn't fade out when he entered brush during Overheat
    • SUPER GALAXY MISSILES Fixed a bug where Super Galaxy Rumble would occasionally fire a "Danger Zone'd" Electro Harpoon missile on his second cast, even if his first cast wasn't in the Danger Zone


"While we realize this is a small power reduction, we had the choice of either buffing Shyvana's late ranks in damage or just reducing her level 1 damage by 20."
  • FlameBreath.jpg E - Flame Breath
    • SORRY SHYVANA Fixed a bug where Flame Breath was dealing an extra 20 damage at Rank 1. Shyvana's damage now accurately reflects the tooltip (at 60 damage).
    • VISUALS Adjusted Flame Breath's dragon form particles to better match the damage cone. Actual area of effect remains unchanged.


"We're just re-aligning the visuals on Sivir's Q to better match the actual hitbox of the spell (but it's still a small buff!)."
  • BoomerangBlade.jpg Q - Boomerang Blade
    • CLARITY! Sivir's Crossblade now accurately deals damage when the center of the projectile ⇒ edge of the projectile hits an opponent
    • RANGE 1175 ⇒ 1250 (to match the visuals)
    • ALL IN THE WRIST Fixed a bug where Sivir's basic attacks would cancel whenever Boomerang Blade would begin its return

Twisted FateSquare.pngTwisted Fate

"Part three of three."
  • General
    • BUGFIX Fixed a bug where abilities that give true sight of enemy champions would reveal stealth wards under certain circumstances

Urgot's basic attack now travels faster and Acid Hunter refunds half its mana cost if it kills an enemy. Hyper Kinetic Position Reverser also has a shorter cooldown and lower mana cost at later ranks, and lets Urgot ignore unit collision immediately after using it.

"We're just doing a bunch of small changes aimed at helping Urgot get back onto his... feet. While we try not to discuss our changes in the context, the big thing here is the mana refund on Acid Hunter, which will give Urgot a better fallback mechanic when it comes to last hitting."
  • General
    • THIS REALLY HELPS Recommended items have been updated
    • THIS PROBABLY HELPS MORE Basic attack missile speed is now 1300 ⇒ 1600
  • AcidHunter.jpg Q - Acid Hunter
    • NEW GET BETTER AT LAST HITTING, URGOT Now refunds half mana cost if Acid Hunter kills an enemy
    • NEW FANCY PARTICLES Now with extra spinning and a trail
    • RESPONSIVE MISSILES Fixed a bug where Acid Hunter would fail to home if it was fired too quickly after Noxian Corrosive Charge was applied
  • Hyper-KineticPositionReverser.jpg R - Hyper-Kinetic Position Reverser
    • COOLDOWN 120 seconds at all ranks ⇒ 120/110/100 seconds
    • COST 120 mana ⇒ 100 mana
    • NEW HYPER KINETIC WALKING THROUGH THINGS Urgot now ignores unit collision for 1 second after successfully using Hyper Kinetic Position Reverser
    • A VERY SMALL BUFF Now grants bonus armor and magic resistance after a 0.25 second delay ⇒ immediately
    • LESS DISORIENTATION The in-game camera no longer shifts for Urgot when he completes his Hyper Kinetic Position Reverse (so Urgot can follow-up with appropriate skillshots without having to re-orient his camera)


"The hidden power of support Xerath. "
  • Eye of Destruction.png W - Eye of Destruction
    • SORRY SUPPORT XERATH The Spellthief's line of items no longer procs twice when Xerath hits targets in the center of his spell.

Updated Splashes

"As we've mentioned previously, the splash art team is engaged in a long-term effort to update our oldest base splashes. We've got a few more fresh updates for this patch. "
  • SPLASH The following champions have received updated base splashes (click the portraits for the full image!):


Banner of Command.png Banner of Command

  • SOMEONE MAKE A TIBBERS BUILD Fixed a bug where Annie's Tibbers wasn't gaining increased damage from Banner of Command

Iceborn Gauntlet.png Iceborn Gauntlet

"Don't let us prevent you from being inefficient with your unique passives."
  • THE SUPERIOR SPELLBLADE Fixed a bug where if you had both an Iceborn Gauntlet and a Trinity Force in your inventory, you'd deal 150% of your base AD to your primary target instead of the expected 200% (you'll still deal 125% of your base AD to surrounding enemies)

Essence Reaver.png Essence Reaver

"Cheaper Essence Reaver. Bam. Summary and context in one."
  • COMBINE COST 1050 gold ⇒ 850 gold
  • TOTAL COST 3400 gold ⇒ 3200 gold
  • BUGFIX Fixed a bug where Essence Reaver was restoring more mana than it should at higher mana levels

Twin Shadows.png Twin Shadows

  • EVEN GHOSTS DON'T FACE CHECK Fixed a bug where the spooky ghosts from Twin Shadows would sometimes not path correctly into bushes to tag enemies

Item Purchasing

"We think players should be able to shop in the comfort of their own death, without the stress of tipping their hand to their opponents."
  • PERSONAL BOUNDARIES Item purchases, sales and undos while dead are no longer visible to opponents who have vision on your corpse

Twisted Treeline

Twisted Treeline Aura

"These days, double AP comps have been very dominant in the meta, so we're trying to reduce those that focus on non-stop push / waveclear."
  • MAP-WIDE MANA REGENERATION AURA 1.5% of missing mana ⇒ 0.7% of missing mana

Ichor of Illumination.png Ichor of Illumination

Too much cooldown reduction! We don't want it to be so easy for mages to hit - and stay at - the cooldown reduction cap."


"Miasma can be a bit overbearing on Twisted Treeline. This change, combined with the nerf to TT's mana regen aura, should make her more reasonable."
  • Miasma.jpg W - Miasma
    • BASE MAGIC DAMAGE PER SECOND 25/35/45/55/65 ⇒ 20/30/40/50/60
    • MAXIMUM POTENTIAL MAGIC DAMAGE 225/315/405/495/585 ⇒ 180/270/360/450/540



  • AegisProtection.jpg Passive - Aegis Protection
    • BUGFIX Fixed a bug where Aegis Protection was not blocking shots from Dominion towers.

Twisted Treeline & Dominion


"Solar Flare is a game changer, and with easy access to a number of tanky cooldown reduction items on these maps, her ult is up a little too frequently."
  • SolarFlare.jpg R - Solar Flare
    • COOLDOWN 90/75/60 seconds ⇒ 100/90/80 seconds

Jarvan IVSquare.pngJarvan IV

"Jarvan has great base stats and gets to build a ton of damage items while still remaining fairly tanky. We don't want to take away his utility, so we're focusing on his damage potential instead."
  • MartialCadence.jpg Passive - Martial Cadence
    • COOLDOWN 10/8/6 seconds ⇒ 10/9/8 seconds
  • DragonStrike.jpg Q - Dragon Strike
    • ARMOR SHRED 10/14/18/22/26% ⇒ 10/12/14/16/18%

Ranked Play

"We're adding a new tier to ranked play and announcing end-of-season rewards. [out the announcement for more info.]"

Framerate Improvements

"We've made some incremental performance improvements this patch, resulting in a small framerate boost across all configurations."
  • PERFORMANCE Framerates have been improved by 5-10%


  • Fixed a bug where the landing circle indicator for Pantheon's R - Grand Skyfall sometimes showed as green (blue in colorblind mode) for his enemies instead of red
  • Rengar's stealth indicator no longer persists through death if Rengar dies after casting R - Thrill of the Hunt but before gaining the stealth effect
  • The tooltip for Zed's W - Living Shadow now displays the amount of bonus AD granted even if the skill hasn't been leveled up yet
  • The particles for Nocturne's Q - Dusk Trail no longer obscure other particle effects
  • Status text for crowd control effects no longer overlaps when multiple CC effects apply at the same time
  • Kayle's recommended starting items on Twisted Treeline have been updated to no longer exceed the default amount of starting gold
  • Katarina's E - Shunpo no longer benefits from spell vamp on wards, despite doing no damage

Upcoming Skins

The following skins will be released at various times during Patch 4.15:

Veigar Splash 8.jpg Yasuo Splash 2.jpg Caitlyn Splash 6.jpg

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