This is a list of the current changes on the PBE.

Systemic (runes & items) changes

Mage mythics

• Crown of the Shattered Queen ability power: 60 --> 70 (Ornn item: 80 --> 90)

• Everfrost (+Ornn item) slow duration: 1.5s --> 1s

• Liandry's Anguish (+Ornn item) burn base damage: 15/s --> 12.5/s

• Riftmaker ability power: 80 --> 70 (Ornn item: 100 --> 90)

• Hextech Rocketbelt magic pen: 6 --> 10 (Ornn item: 10 --> 15)

• Night Harvester (+Ornn item):

  • per-target cooldown: 40s --> 30s
  • ability haste: 15 --> 25 (Ornn item: 20 --> 30)

Assassin items

• Prowler's Claw:

  • lethality: 18 --> 20 (Ornn item: 26 --> 29)
  • attack damage: 60 --> 70 (Ornn item: 75 --> 85)

• Duskblade of Draktharr:

  • lethality: 18 --> 20 (Ornn item: 26 --> 29)
  • attack damage: 60 --> 70 (Ornn item: 75 --> 90)

• Eclipse:

  • lethality: 18 --> 20 (Ornn item: 26 --> 29)
  • attack damage: 55 --> 60 (Ornn item: 75 --> 85)
  • max health damage (+Ornn item): 6% always --> 6% melee, 3% ranged

• Serpent's Fang lethality: 12 --> 14

• Axiom Arc lethality: 10 --> 13

• Umbral Glaive cooldown: 35s --> 40s

Grievous Wounds

• Healing reduction: 50%/30% --> 40%/25%

(Affects the following items, as well as Katarina, Kled, Singed, Varus)

• Chempunk Chainsword:
  • ability haste: 15 --> 25
  • attack damage: 45 --> 55
• Mortal Reminder attacks for empower: 3 --> 2

• Executioner's Calling attack damage: 15 --> 20

• Morellonomicon:

  • health: 250 --> 300
  • ability power: 80 --> 90

• Chemtech Putrifier ability power: 55 --> 60

• Oblivion Orb ability power: 30 --> 35

• Thornmail passive damage bAR scaling: 10% --> 20%

• Bramblevest passive base damage: 3 --> 4

Other tank items

• Bami's Cinder completion price: 300 --> 200 (upgrades unchanged)
• Sunfire Aegis health: 350 --> 450 (Ornn item: 500 --> 600)
• Frostfire Gauntlet health: 350 --> 450 (Ornn item: 500 --> 600)

• Turbo Chemtank health: 350 --> 450 (Ornn item: 500 --> 600)

• Randuin's Omen armor: 80 --> 90

• Spirit Visage magic resist: 40 --> 50

• Abyssal Mask:

  • magic resist per cursed enemy: 7 --> 9
  • magic resist: 30 --> 35

• Knight's Vow ability haste: 10 --> 20

• Zeke's Convergence armor: 25 --> 35

Bruiser items

• Goredrinker (+Ornn item) mythic ability haste: 5 --> 7

• Death's Dance heal: 140% bAD --> 120% bAD

• Maw of Malmortius cooldown: 60s --> 75s

• Sterak's Gage:

  • shield bHP scaling: 70% --> 75%
  • base AD to bonus AD: 40% --> 45%

• Blade of the Ruined King lifesteal: 7% --> 8%

Other DPS/ADC runes and items:

• Lethal Tempo attack speed: 30%-54% --> 18%-42%

  • 5% per stack at level 1 increasing by +1% at levels 3, 6, 9, 12 --> 3% per stack at level 1 increasing by +1% at levels 3, 6, 9, 12

• Kraken Slayer (+Ornn item) 3rd attack true damage: 60 +45% bAD --> 50 +40% bAD

Individual champion changes (Alphabetical)

Aphelios P:

• AS per rank: 6% --> 7.5%
• Lethality per rank: 4.5 --> 5.5

Brand:

• P tHP damage per stack over duration: 3% --> 2.5%
• P tHP damage explosion: 10%-14% linear between champion levels 1-17 --> 8%-12% linear between champion levels 1-17 (2% per 100 AP scaling unchanged)

Caitlyn:

• Q tAD scaling: 130%-190% --> 125%-205%
• Q cost: 50-90 --> 55-75
• E base damage: 70-230 --> 80-280
• E cooldown: 16s-10s --> 16s-8s

Gragas:

• Q min AP scaling: 70% --> 80% (max is still x1.5 this value)
• Q cooldown: 11s-7s --> 10s-6s
• E cooldown: 16s-12s --> 14s-12s

Graves:

• (Bugfix) now swaps Glacial Augment for First Strike

Gwen:

• W resists: 20 flat --> 12-20
• W cooldown: 22s-14s --> 22s-18s
• E cooldown refund: 60% --> 50%

Irelia:

• Q heal tAD scaling: 7%-11% --> 9%-13%
• E cooldown: 18s-12s --> 16s-12s

Kayn:

• Q Rhaast (Darkin, red form) scaling: 5.5% per 100 bAD --> 5.0% per 100 bAD

Kogmaw:

• Q attack speed: 15%-35% --> 10%-30%
• Q shred: 25%-33% --> 23%-31%
• W max health scaling: 3%-7% --> 3%-6%

Lee Sin:

• base AD: 66 --> 68
• Q base damage (each part): 50-150 --> 55-155

Lillia:

• base health: 650 --> 625
• P burn scaling over 3s: 1.5% per 100 AP --> 1.2% per 100 AP

Master Yi:

• health growth: 106 --> 100
• E base damage: 30-62 --> 30-50

Mordekaiser:

• P "combat tracking duration": 4s flat --> 4s-9s (Scales with passive rank, but passives don't level up?)
• URF-only changes:
  • P bonus MS: unchanged 1-18, now scales past 18 (9% @ 19-30 (same as 18) --> 12%-18% @ 19-30)
  • 3% at level 1 and increasing by +3% at levels 6, 11 -> 3% at level 1 and increasing by +3% at levels 6, 11, 19, 24, 30

Nunu:

• Q non-champ heal: 65-185 +6% bHP +70% AP --> 65-185 +10% bHP +90% AP
• non-champ and low-health modifiers are still x0.6 and x1.5 of these values respectively
• E cooldown: 14s flat --> 14s-10s

Olaf:

• P max stats threshold: 22.5% --> 30%
• P max lifesteal: 10%-30% linear with champion levels --> 8%-25% linear with champion levels
• Q min cooldown: 3s --> 2.5s
• Q base damage: 60-260 --> 70-270
• W cooldown: 16s-10s --> 16s-12s
• R resists: 10-40 --> 10-30

Rakan:

• Q base heal: 18-90 --> 30-115
• W cooldown: 18s-12s --> 16s-10s
• E cost: 60-100 --> 40-60
• E base shield: 35-135 --> 50-150

Rengar:

• base health: 655 --> 620
• AD growth: 3 --> 2.5
• R cooldown: 110s-70s --> 110s-90s

Ryze:

• E damage AP scaling: 30% --> 35%
• E cost: 40-100 --> 35-75

Samira:

• AD growth: 3 --> 3.3
• Q tAD scaling: 80%-120% --> 85%-125%

Senna:

• P "soul drop percent chance on senna kill": 2.777% --> 8.333%
• Q base slow: 20% --> 15%
• Q slow duration: 2s flat --> 1s-2s

Sona

• (Bugfix) W shield breakpoints fixed to reflect 12.10 nerf

Swain:

• P heal tHP scaling: 3.5%-7% --> 3%-6%
• 3.5% at level 1, increasing by +1% on levels 6, 11 and by +1.5% on level 16 -> 3.5% at level 1, increasing by +1% on levels 6, 11, 16
• W damage: 80-240 +70% AP --> 80-220 +55% AP (minions are still half)
• R heal per second: 15-45 +20% AP --> 15-40 +18% AP (minions are still x0.1)

Sylas:

• W cooldown: 14s-6s --> 12s-6s
• cost: 60-100 --> 50-90
• min healing AP scaling: 35% --> 40% (max healing is still x2.0 this value)
• E cooldown: 14s-10s --> 13s-9s

Tahm Kench:

• P onhit bHP scaling: 2.5% --> 4%
• Q base heal: 10-20 --> 10-30
• R base shield: 500-900 --> 650-950

Taliyah:

• base health: 570 --> 550
• Q cooldown: 6.5s-2.5s --> 7s-3s
• Q base damage per rock: 38-130 --> 40-120
• repeat hits and recast are still x0.4 and x1.9 of this respectively

Taric:

• Q cost: 65-85 --> 60 flat
• Q heal Taric tHP scaling per stack: 0.75% --> 1%
• E stun duration: 1.25s --> 1.5s
• E cooldown: 17s-13s --> 15s-11s

Tryndamere:

• Q base heal: 25-57 --> 30-70
• Q heal per fury point: 0.45-1.65 --> 0.5-2.3
• R cooldown: 130s-90s --> 120s-80s

Veigar

• E cooldown: 20s-12s --> 20s-14s

Wukong:

• W cooldown: 20s-12s --> 22s-12s
• E monster mod: 180% --> 160%

Xin Zhao:

• P heal tAD scaling: 7% --> 10%
• W cost: 60 flat --> 60-40
• W thrust damage: 40-180 +80% tAD +50% AP --> 50-190 +90% tAD +65% AP (crit is still up to x1.333 these values)

Zeri:

• Fully charged passive attack:

  • HP ratio 1-10% --> 3%-15%
  • AP ratio 80% --> 90%
  • No longer slows.

• Q base damage 7-15 --> 8-20

• Q AD ratio 110%-120% --> 110%-130%

• W beam (terrain collision) now critically strikes for 175% damage

  • Note how critical strikes grant triple E CD refund and R stacks

• W AD ratio 140% AD --> 150% AD

• W slow 30%-70% --> 30%-50%

• W cooldown 13-9 --> 12-8

• E cooldown: 26s-20s --> 22s-16s

• E cooldown refund per hit: 1.0s --> 0.5s (crits still triple)

• R stacks per initial champion hit: 4 --> 8

• R bonus MS per stack 1.5% --> 1%

• R cooldown 120-70 --> 100-70

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This changelist was datamined and might differ from official numbers in a place or two. For context of these changes, see Riot Phroxz0n's twitter.

Credit for most of this post goes to u/FrankTheBoxMonster.

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