Alistar - nerfed

Unbreakable Will (R):
Damage reduction decreased to 50/60/70% from 70% at all ranks.
Anivia - buffed

Glacial Storm (R):
Upkeep cost decreased to 30/45/60 from 40/50/60
Initial cast size increased to 200 from 150
Leash range increased to 1100 from 1000
Cast range increased to 750 from 685.
Will no longer be cancelled by Zhonya's Hourglass or Bard's Ultimate
Aurelion Sol - nerfed

Celestial Expansion (W):
Cooldown increased to 6/5.5/5/4.5/4 from 6/5/4/3/2
Voice of Light (R):
Damage decreased to 150/250/350 from 200/300/400
Cassiopeia - buffed

Noxious Blast (Q)
Range increased to 850 from 750.
Miasma (W)
Range increased to 500-900 from 550-800
Fiddlesticks - nerfed

Dark Wind (E):
Number of bounces decreased to 6 from 7
Illaoi - buffed

Harsh Lesson (W)
Cooldown decreased to 4 seconds at all ranks from 6/5.5/5/4.5/4
Jinx - buffed

Switcheroo! (Q):
Rocket attack speed at level 1 increased to .625 from .531.
Rocket bonus attack speed scaling increased to 25% reduction from 15% reduction.
Malzahar - nerfed

Void Shift (Passive)
Cooldown increased to [30/18/10/6 seconds (at level 1/6/11/16) after taking direct damage] from [23-6 seconds]
Master Yi - buffed

Meditate (W):
AP ratio increased to .25 from .15
Wuju Style (E):
Active bonus true damage increased to 14/23/32/41/50 from 12/19/26/33/40
Nocturne - buffed

Umbra Blades (Passive) now has a .5 AP ratio.
Shyvana - buffed

Burnout (W):
Now has a .1 AP ratio on the AoE magic damage per second.
Now has a .025 AP ratio on the basic attack extra magic damage while effect is active.
Swain - changed

Health growth increased to 90 from 78
Ravenous Flock (R):
Healing vs minions now 8/11/13 (+3% AP) from 15% damage
Healing vs Champions now 30/45/60 (10% AP) from 75% damage
AP ratio on champion heal increased to 12% from 10%
Tryndamere - buffed

Undying Rage (R)
While active, Tryndamere can not be reduced below 30/50/70 HP up from 1 HP
Vel'Koz - buffed

Organic Deconstruction (Passive):
AP ratio increased to .5 from .4
Life Form Disintegration Ray (R):
AP ratio increased to 1.25 from 1.0
Vladimir - changed

Hemoplague (R):
Now heals for [150/250/350 ( +.7 AP) if one champion was hit plus 50% of that for each champion beyond the first] from [75/125/175 (+.35 AP) per each champion hit.]
Xerath - changed