New Skins in the Store

    Sabretusk Sejuani
    Darkrider Sejuani

PVP.net v1.52

    Ranked Teams
        Ranked Team roster size has been increased to a maximum of 9
        Provisional Ranked Teams will now be automatically disbanded after a certain period of time to prevent name squatting
        Made it easier to invite members of your Ranked Team to a group chat
        Team Tags will now show up in more parts of the PVP.net and in game UI
        Team Game invites will now play a different sound to differentiate from normal invites
        Team Member status will now show up in the Team Profile screen so you can see who is online and available to play
        Cleaned up the Ranked Team creation process to be more clear
        Tweaked the Ranked Team matchmaking algorithm to be more accurate
    Spectator
        Fixed a bug where Spectators would sometimes get stuck at the loading screen
        Fixed a bug where the last few minutes of a spectated game get sped up
    General
        Summoner's Rift (Winter) has been removed from matchmaking
        Chat windows and buddy tooltips have been re-skinned to be visually consistent with the rest of the buddy list
        The horizontal “arrow button” scrolling (for when you have more than 4 chat windows) has been removed. Chat windows will now scale down their presence in the task bar so they all fit.
        Text input focus stealing on new incoming IMs has been removed
        Fixed a bug where chat windows would scroll down to the bottom for every incoming message, regardless of your current scrolling position

League of Legends v1.0.0.132
Sejuani, the Winter's Wrath

    Frost (Passive) - Sejuani's basic attacks apply Frost, reducing enemy Movement Speed by 10% for 3 seconds.
    Arctic Assault - Sejuani charges forward to deal magic damage and apply Frost to enemies. Sejuani stops upon colliding with an enemy champion.
    Northern Winds - Sejuani summons an arctic storm around her which deals magic damage to nearby enemies every second. Damage is increased against enemies affected by Frost or Permafrost.
    Permafrost - Sejuani converts Frost on nearby enemies to Permafrost, dealing magic damage and increasing the Movement Speed reduction dramatically.
    Glacial Prison (Ultimate) - Sejuani throws her weapon, stunning the first enemy champion hit. Nearby enemies are stunned for a shorter duration. All targets take magic damage and are affected by Frost.

Ahri

    Orb of Deception mana cost increased to 70/75/80/85/90 from 60/65/70/75/80
    Spirit Rush cooldown increased to 90/80/70 seconds from 80/70/60

Dr. Mundo

    General
        Base attack speed increased to .625 from 0.595
        Attack speed per level increased to 2.8 from 2.5
        Magic resist per level increased to 1.25 from .75
    Burning Agony health cost reduced to 10/15/20/25/30 from 20/25/30/35/40
    Sadism ultimate cooldown reduced to 65 from 75

Fizz

    Implemented the following changes to Chum the Waters which were in Ahri patch changelog, but not actually moved into the patch:
        Fixed a bug where Chum the Waters stopped working if Fizz died
        Hitting an enemy who is immune to the Fish now causes the Fish to drop on the ground instead of fizzling
        Using Quicksilver Sash now drops the Fish on the ground instead of causing the shark to emerge immediately
        Added a 3-2-1 timer like Time Bomb
        No longer hits nontargetable units like Vladimir in Sanguine Pool

Graves

    Buckshot Mana cost increased to 60/70/80/90/100 from 60/65/70/75/80
    Collateral Damage
        Initial damage reduced to 250/350/450 from 250/375/500
        Explosion damage reduced to 140/250/360 from 140/275/400
        Cooldown increased to 100/90/80 from 80/70/60

Jarvan IV

    Mana per level increased to 40 from 30
    Golden Aegis mana cost reduced to 65 from 75
    Demacian Standard mana cost reduced to 55 from 60

Jax (remake)

    General
        Base health increased to 551 from 506
        Health per level increased to 88 from 83
        Armor per level increased to 3.5 from 3.2
        Added an animation to Jax's Joke
    Relentless Assault - Passive (Remade)
        Every time Jax attacks an enemy he gains 4-10% increased attack speed (stacks up to 6 times)
    Leap Strike
        Cooldown changed to 10/9/8/7/6 seconds from 13/11/9/7/5
        Damage changed to 70/110/150/190/230 (+1.0 bonus attack damage)(0.6 ability power) from 20/45/70/95/120 (+1.0 total attack damage)(0.7 ability power)
    Empower
        Cooldown reduced to 7/6/5/4/3 seconds from 9/8/7/6/5
        Damage changed to 40/85/130/175/220 from 60/95/130/165/200
        Ability power ratio increased to 0.6 from 0.4
        Mana cost increased to 30 from 20
    Counter Strike (Remade)
        Jax dodges all incoming basic attacks for 1.5 seconds. At the end of the effect, Jax deals 40/70/100/130/160 (+0.8 bonus attack damage) physical damage and stuns nearby enemies for 1 second. This spell deals an additional 10/15/20/25/30 damage for each attack dodged.
    Grandmaster's Might (Remade)
        Passive: Every third consecutive attack deals an additional 100/160/220 (+0.7 ability power) magic damage.
        Active: Jax gains ability power equal to 25/45/65 (+ 20% of his ability power) and attack damage equal to 25/45/65 (+ 20% of his bonus attack damage) for 6 seconds.

Nunu

    Base attack speed increased to .625 from .613
    Attack speed per level increased to 2.25 from 1.08

Rammus

    Powerball duration reduced to 7 seconds from 8
    Powerball initial speed increased to 30% from 25%
    Defensive Ball Curl damage return reduced to 15/25/35/45/55 from 20/30/40/50/60

Riven

    Base movement speed reduced to 320 from 325
    Base health regen reduced to 10.4 per 5 seconds from 12
    Health regen per level reduced to 0.9 per 5 seconds from 1
    Broken Wings base damage increased to 30/55/80/105/130 from 30/50/70/90/110
    Ki Burst base damage reduced to 50/80/110/140/170 from 50/90/130/170/210

Shaco

    Jack in the Box duration lowered to 60 seconds from 90
    Jack in the Boxes now show their remaining duration (in seconds) in their mana bar

Skarner

    Crystal Slash mana cost adjusted to 20/22/24/26/28 from 15 at all levels
    Crystal Slash slow decreased to 20/25/30/35/40% from 25/30/35/40/45%
    Impale cooldown increased to 130/120/110 from 110/100/90

Tryndamere

    Base attack damage lowered to 56 from 59.2
    Base health regen per 5 seconds reduced to 7.9 from 10.9
    Mocking Shout attack damage reduction lowered to 20/35/50/65/80 from 20/40/60/80/100
    Fury decay now begins after 5 seconds, as opposed to 8 second previously

Vayne

    Base movement speed reduced to 300 from 305
    Night Hunter movement speed reduced to 30 from 40
    Tumble bonus damage reduced to 30/35/40/45/50% from 40/45/50/55/60%
    Final Hour Tumble stealth duration reduced to 1 second from 1.5

Veigar

    Fixed a bug where killing a unit with Baleful Strike would not create the particle effect

Vladimir

    Transfusion cooldown reduced to 10/8.5/7/5.5/4 seconds from 12/10/8/6/4
    Crimson Pact ability power to health conversion reduced to 1.4 from 1.8
    Hemoplague no longer costs 15% of your current health and is now no cost to cast
    Tides of blood health cost ramp up reduced to 25% from 50%

Volibear

    Base armor increased to 20 from 17.5
    Rolling Thunder
        Damage increased to 30/60/90/120/150 from 25/50/75/100/125
        Volibear now gains 15% Movement Speed for the duration. This bonus increases to 45% Movement Speed when moving toward enemy champions.
        Fixed a bug where Rolling Thunder's attack would sometimes cancel against fast moving targets
    Frenzy bonus health to damage ratio reduced to 15% from 18%
    Majestic Roar damage increased to 60/105/150/195/240 from 60/95/130/165/200
    Chosen of the Storm (Passive) cooldown no longer resets on death

Warwick

    Hunter's Call cooldown reduced to 24/22/20/18/16 seconds from 30/27/24/21/18

Xerath

    Fixed a bug where Mage Chains could sometimes stun the target for 2 seconds instead of 1.5

Items

    Ionic Spark is now purchasable on Summoner's Rift and Twisted Treeline
    Nashor's Tooth
        Total cost reduced to 2735 from 2885
        Ability Power increased to 65 from 55
    Ninja Tabi
        Dodge has been removed
        New UNIQUE Passive: Reduces the damage taken from non-turret basic attacks by 10%
    Stinger total cost reduced to 1090 from 1140
    Sword of the Divine has been removed

Summoner Spells

    Surge cooldown reduced to 180 seconds from 220

General

    Colorblind Mode
        New mode which improves visualization of health bars and various graphical effects and animations for colorblind players.
        Location (while in game): Options > Video > Advanced Options > Colorblind Mode (checkbox)
    Blessing of the Lizard Elder no longer triggers on spell damage
    Updated several Champions recommended items

Art

    Champions
        Guqin Sona model scale normalized to better match her other skins
    Splash and Loading Screen Updates
        Classic Alistar
        Classic Fiddlesticks
        Classic Galio
        Classic Janna (minor artifact fixes)
        Classic Malzahar
        Unchained Alistar (minor artifact fixes)
        Bird of Prey Anivia
        Team Spirit Anivia
        Corporate Mundo
        Bandito Fiddlesticks
        Piltover Customs Heimerdinger
        PAX Jax
        Angler Jax
        Shadow Prince Malzahar
        Vizier Malzahar
        Assassin Master Yi
        Yellow Jacket Shen
        Silent Night Sona
        White Mage Veigar