Ahri
Fox-Fire: Damage decreased to 40/65/90/115/140 (+0.4 increased) [max damage:80/130/180/230/280 (+0.8 increased)], from 40/70/100/130/160 (+0.375) [max damage:80/140/200/260/320 (+0.75)].
Spirit Rush: Damage decreased to 85/125/165 (+0.35 increased), from 100/140/180 (+0.3).
Ezreal (All buffs, Pulsfire skin incoming?)
Essence Flux: Mana Cost decreased to 50/60/70/80/90 Mana, from 60/70/80/90/100 Mana.
Trueshot Barrage: Mana Cost decreased to 100 Mana, from 150 Mana.
Galio
Resolute Smite: Ability Power Ratio decreased to .6, from .7.
Graves
Buckshot: Bullet Damage decreased to 60/95/130/165/200, from 60/105/150/195/240. Damage per additional bullet increased to 35%, from 25%.
Smokescreen: Duration decreased to 4 seconds, from 5 seconds.
Jax
Empower: Damage decreased to 40/75/110/145/180, from 40/85/130/175/220.
Kog'Maw
Living Artilery: Bonus Damage to Champions decreased to 125%, from 150%.
Nautilus
Titan's Wrath: Damage decreased to 30/55/80/105/130, from 30/60/90/120/150.
Renekton
Slice and Dice: Dice - 50 Fury Bonus Armor Reduction increased to 15/20/25/30/35% from, 15/17.5/20/22.5/25%.
Swain
Range increased to 500, from 480.
Decrepify: Slow % increased to 20/25/30/35/40%, from 20/23/26/29/32%. Range increased to 625, from 550.
Ravenous Flock: Cooldown decreased to 8 at all levels, from 10 at all levels.
Urgot
Hyper-Kinetic Position Reverser: Bonus Armor and Magic Resist reduced to 60/90/120, from 80/105/130.
Terror Capacitor: Shield Hit Points reduced to 80/130/180/230/280, from 80/140/200/260/320.
Nerfing Graves. Sadness. Only good things are Darius nerfs and Swain buffs.