Akali
Akali is no longer a ninja
Alistar
Pulverize now slams enemies into the ground instead of into the air
Headbutt has been changed to Rocket Grab
Alistar is now a ninja
Amumu
Amumu is now happy
Emumu skin has been replaced with Punkmumu
Annie
Annie has grown up and is now a teenager
Tibbers now wears armor
Blitzcrank
Blitzcrank now giggles whenever he uses Power Fist
Cassiopeia
Cassiopeia has been removed from the League following an incident involving a plane
We’re tired of all the Miss Fortuning snakes, on that Miss Fortuning plane
Cho’Gath
Cho’Gath now starts the game the same size as if he had 6 feasts
Feast still increases Cho’Gath’s size
Bushes can no longer stealth Cho’Gath
Corki
Valkyrie is now global
Gatling Gun now heals teammates as well as damaging enemies
Corki can now fly over obstacles without using Valkyrie
Dr. Mundo
Dr. Mundo decided that he enjoys the color blue
Dr. Mundo now has mana
None of his ability costs have changed
Fiddlesticks
Crowstorm now triggers Terrify on all enemies caught in the area of effect
Terrify’s Fear duration has been increased to 10 seconds at all ranks
Fiddlesticks has been removed from the League
Galio
Now shouts “DEMACIAAAAAAAAAAAAAAAAAA!” while channeling Idol of Durand
Gangplank
Gangplank’s model has been replaced with a targeting reticle
Gangplank now fights from his boat
Parrrley is now global
His VO has been reworked to be shouted from a distance and includes far more laughter
Gragas
Gragas is now sober
Garen
Courage has been removed and replaced with a new ability
New Ability – Plant Grass
Garen infects an area with grass seeds, causing additional brush to grow over the next 30 seconds. When brush is fully grown, it can be used by allies and enemies
Jax
Jax can no longer dodge
Jax’s lamppost has been deemed overpowered and replaced by a rocket launcher
All of Jax’s abilities are now ranged and blow things up
Jax can now dodge again
Nidalee
Age reduced by 10 years
Aspect of the Cougar has been renamed to Aspect of the Puma
Pantheon
Grand Skyfall has been renamed to the more appropriate: “Man Drop”
Sion
Sion has taken a sabbatical from the League to pursue a lifelong dream of teaching Kindergarten
He’ll be back
Sivir
Ricochet bounces now apply on-hit effects such as Tiamat and Madred’s Bloodrazor
Sona
Now requires skill to play
Teemo
Cuteness increased by 10%
Teemo may no longer be the target of hostile attacks or abilities
Tryndamere
Undying Rage has been renamed to Endless Rage
Endless Rage now has infinite duration
Zilean
Zilean can now travel back in time creating new realities and tangent universes in the process
Something has gone terribly wrong
Items:
New Item: Yordle Saddle. Any yordle champion can buy this new item to ride Cho'Gath.
Wriggle's Lantern: new unique passive: taunts nearby Jaxes (both enemy and allied)
Tiamat has been renamed to Tamat