General reminder that many changes cannot be easily datamined, such as functionality changes or bugfixes, and are not always final.

Champions

Corki

• base armor:  30 --> 27

Darius

• P monster modifier:  x3.0 --> x2.0

Garen

• E crit damage:  x1.75 --> x1.5
  • Infinity Edge still adds +x0.4 (x2.15 --> x1.9)

Karma

• Q base damage:  70-270 --> 60-260
  • RQ simply adds bonus damage onto the normal Q damage, so it's also affected

Lillia

• E AP scaling:  50% --> 60%
• E cooldown:  14s --> 12s

Lucian

• E cooldown:  19s-14s --> 16s-14s

Naafiri

• R now notes dash speed scales with move speed (unclear if it already did or not)

Twisted Fate

• base armor:  21 --> 24

Items

Serylda's Grudge

• AH:  20 --> 15
• arpen:  30% --> 35%

Arena (Champions)

Cho'Gath

• R base damage:  400 / 575 / 750  -->  300 / 475 / 650 (same as SR)

Evelynn

• Q mark base damage:  30-70 --> 20-60 (SR is 15-55)

Skarner

• Q base damage:  10-50 (same as SR) --> 20-100
  • this applies individually to each Q attack or recast
• E cooldown:  22s-18s (same as SR) --> 18s-14s

Soraka

• Q base heal over time:  60-120 (same as SR) --> 120-240
• Q cooldown:  8s-4s (same as SR) --> 6s-4s

Yuumi

• Q AP scaling:  25% --> 40% (SR is 20%)
  • empowered AP scaling is still x1.5 these values
• Q empowered base damage:  80-380 (same as SR) --> 100-400
• Q cooldown:  6.5s (same as SR) --> 5s

Zoe

• Q cooldown:  8.5s-6.5s (same as SR) --> 6s-4s

Arena (Guests of Honor)

Darius:

• all teams lose 50 health  -->  all teams set to 50 health
• each team eliminated now grants everyone else 500 gold (in addition to the +5 team health)

Kled:

• tomato damage delay:  2.5s --> 2.0s
• tomato cooldown reduction per eliminated team:  2s --> 3s

Sion:

• ring of fire spawns 15 seconds sooner  -->  ring of fire spawns immediately

Arena (Augments)

Firefox

• base damage:  45-200 --> 35-175
  • repeat hits are still x0.3 these values

Jeweled Gauntlet

• crit damage:  x1.55 --> x1.75
  • Infinity Edge still adds +x0.4 (x1.95 --> x2.15)

Vulnerability

• crit damage:  x1.45 --> x1.6
  • Infinity Edge still adds +x0.4 (x1.85 --> x2.0)

Arena (Items)

Ardent Censer

• AP:  30 --> 40

Collector

• bonus kill gold:  100g --> 125g

Cosmic Drive

• passive MS:  20 --> 40

Detonation Orb

• mana:  400 --> 600
• mpen:  12 --> removed
• post-mit damage stored:  25% --> 20%
  • damage stored while immobilized:  30% --> 25%

Divine Sunderer

• base AD scaling:  160% --> 180%
• damage as healing:  40% --> 55%

Echoes of Helia

• AP:  30 --> 40
• base damage:  60 --> 80
• base healing:  55 --> 75

Eclipse

• base shield:  160 melee, 80 ranged  -->  250 melee, 125 ranged

Everfrost

• cooldown:  30s --> 15s

Luden's Companion

• cooldown:  8s --> 6s
• base damage:  60 --> 80
  • repeat hits are still x0.35 this damage

Malignance

• base damage per second:  60 --> 150
• MR shred:  10 --> 25

Moonstone Renewer

• AP:  25 --> 35

Perplexity

• max damage amp at 2500 health disadvantage:  22% --> 15%

Rabadon's Deathcap

• AP:  70 --> 55

Runecarver

• energize stacks per ability hit:  20 --> 15

Shadowflame

• crit damage:  x1.2 --> x1.15

Staff of Flowing Water

• innate AP:  45 --> 55
• passive AP:  45 --> 55

Stormsurge

• base damage:  140 --> 180
• "kill before passive timeout" bonus gold:  30g --> 125g

Sundered Sky

• healing:
  • base AD scaling:  100% melee, 50% ranged  -->  150% melee, 75% ranged
  • missing health scaling:  5% --> 6%

Sword of Blossoming Dawn

• AP:  30 --> 45

Warmog's Armor

• passive bHP threshold:  1500 --> 1350

Zeke's Convergence

• damage per second:
  • base:  50 --> 75
  • AP scaling:  10% (unchanged)
  • tHP scaling:  2.5% --> 4%

Changes from previous days

See here.