League of Legends Patch 12.13 brings along not just a new champion, but also a whole host of buffs with some nerfs thrown in there as well. These patch notes come from the Riot Games official blog post, and the full patch notes can be found there along with developer commentary.

Sivir

Base Stats

• Base Health - 632 ⇒ 600
• Base Mana - 325 ⇒ 340
• Mana Growth - 50 ⇒ 40
• Base Mana Regeneration - 1.6 ⇒ 1.2 per second
• Mana Regeneration Growth - 0.18 ⇒ 0.16
• Base Attack Damage - 63 ⇒ 58
• Attack Damage Growth - 3 ⇒ 3.3
• Attack Speed Growth - 1.6% ⇒ 2%

Passive - Fleet of Foot

• Bonus Move Speed - 35/40/45/50/55 ⇒ 55/60/65/70/75 (levels 1/6/11/16/18)
• Bonus Move Speed Duration - 2 seconds ⇒ Decays over 1.5 seconds

Q - Boomerang Blade

• Base Damage - 35/50/65/80/95 (+70/85/100/115/130% total AD) (+50% AP) ⇒ 25/40/55/70/85 (+80/85/90/95/100% total AD) (+60% AP)
• Cooldown - 7 seconds at all ranks ⇒ 10/9.5/9/8.5/8 seconds
• Cast Time - 0.25 seconds ⇒ 0.25-0 seconds (scales down with attack speed)
• Critical Chalicar - Now scales with critical strike chance, dealing up to 50% bonus damage at 100% crit chance
• Mana Cost - 70/80/90/100/110 ⇒ 55/60/65/70/75
• Missile Speed - 1350 ⇒ 1450 outwards and 1200 inwards

W - Ricochet

• Damage - 30/45/60/75/90% total AD ⇒ 30/35/40/45/50% total AD
• Mana Cost - 75 ⇒ 60
• Buff Duration - 3 attacks ⇒ 4 seconds
• Cooldown - 12/10.5/9/7.5/6 ⇒ 10 seconds at all ranks
• Speed Boost - Activating Ricochet now grants Sivir 20/25/30/35/40% bonus attack speed
• Tough Crowd - Now deals 80% damage against minions
• Max Bounces - Unlimited bounces ⇒ 8 bounces per Attack
• Bounce Range - 450 ⇒ 500 (note: approximately 1 additional Teemo)
• Bounce Missile Speed - 700 ⇒ 1000
• Bounce Boost - Ricochets can now bounce back to targets that have already been hit, but only one additional time. Ricochets will prioritize new targets first.

E - Spell Shield

• Cooldown - 22/19/16/13/10 ⇒ 22/20/18/16/14 seconds
• Happy Heals - Blocking an enemy ability now heals Sivir for 60/65/70/75/80% of her total AD (+50% total AP)
• See Ya - Blocking an enemy ability now procs Sivir’s Passive - Fleet of Foot
• Blocking an enemy ability with E no longer refunds mana

R - On the Hunt

• Cooldown - 120/100/80 ⇒ 100/85/70 seconds
• Duration - 8 seconds at all ranks ⇒ 8/10/12 seconds
• The Hunt Continues - If Sivir assists with a recent takedown while her R - On the Hunt buff is active, its aura will now refresh its duration
• Cool(down) - Sivir’s basic attacks during R - On the Hunt now reduce her basic ability cooldowns by 0.5 seconds per attack
• Sivir no longer gains bonus attack speed from On the Hunt
• No longer gives Sivir and her allies an initial movement speed burst

Corki

E - Gatling Gun

• Damage Per Tick - 7.5/10.63/ 13.75/16.88/20 (+10% bonus AD) ⇒ 7.5/10.63/13.75/16.88/20 (+15% bonus AD)

R - Missile Barrage

• Rocket Damage - 90/125/160 (+15/45/75% AD) (+20% AP) ⇒ 80/115/150 (+15/45/75% AD) (+12% AP)
• Big One Rocket Damage - 180/250/320 (+30/90/150% AD) (+40% AP) ⇒ 160/230/300 (+30/90/150% AD) (+24% AP)

Elise

Base Stats

• Base Health - 625 ⇒ 650
• Health Growth - 107 ⇒ 109
• Base Armor - 27 ⇒ 30

Q - Neurotoxin (Human Form)

• Base Damage - 40/70/100/130/160 ⇒ 40/75/110/145/180

Evelynn

Passive - Demon Shade

• Self Heal at Low Health - 15-75 (levels 1-18) ⇒ 15-150 (levels 1-18) per second

W - Allure

• Enemy Magic Resistance Reduction - 25/27.5/30/32.5/35% ⇒ 35/37.5/40/42.5/45%

R - Last Caress

• Using R now puts Passive - Demon Shade on a 1.25-second cooldown (rather than the usual 4-second cooldown)

Fiddlesticks

Q - Terrify

• Fear Duration - 1/1.25/1.5/1.75/2 ⇒ 1.25/1.5/1.75/2/2.25 seconds

R - Crowstorm

• Damage - 625/1125/1625 (+225% AP) ⇒ 750/1250/1750 (+250% AP)

Galio

Q - Winds of War

• Tornado Damage Per Tick - 2% (+0.66% per 100 AP) of target's maximum health ⇒ 2.5% (+1% per 100 AP) of target's maximum health
• Tornado Max Damage (Over 5 Seconds) - 8% (+2.64% per 100 AP) of target's maximum health ⇒ 10% (+4% per 100 AP) of target's maximum health

League of Legends Patch 12.13: Champion Nerfs and Buffs

Gwen

Base Stats

• Health Regen Growth - 0.55 ⇒ 0.9 per 5 seconds

Passive - Thousand Cuts

Maximum Damage Against Monsters - 10 (+15%) ⇒ 6 (+10%)

Q - Snip Snip!

• Damage Per Snip - 9/12/15/16/21 (+5% AP) ⇒ 10/14/18/22/26 (+5% AP)
• Final Snip Damage - 45/60/75/90/105 (+25% AP) ⇒ 60/80/100/120/140 (+35% AP)
• Center Snip - 100% true damage ⇒ 75% true damage
• Now deals 75% damage against minions with more than 20% health
• Minions below 20% health take 1000% bonus damage instead

W - Hallowed Mist

• Bonus Armor and MR - 12/14/16/18/20 (+5% AP) ⇒ 17/19/21/23/25 (+7% AP)
• Duration - 5 ⇒ 4 seconds

E - Skip N' Slash

• Bonus Magic Damage On-Hit - 10 (+15% AP) ⇒ 15 (+20% AP)
• Bonus Range - 50 ⇒ 75
• Cooldown - 13/12/11/10/9 ⇒ 13/12.5/12/11.5/11 seconds
• Cooldown Refunded on First Basic Attack - 50% ⇒ 25/35/45/55/65%

R - Needlework

• Damage Per Needle - 30/55/80 (+8% AP) ⇒ 35/65/95 (+10% AP)
• Patterns - Recast resets after damaging an enemy champion ⇒ Recast resets after 1 second

Karthus

Base Stats

• Base Armor - 18 ⇒ 21
• Health Growth - 101 ⇒ 110

Kled

Q - Bear Trap on a Rope (Mounted)

• Initial Damage - 30/55/80/105/130 (+60% bonus AD) ⇒ 30/55/80/105/130 (+65% bonus AD)
• Second Activation Damage - 60/110/160/210/260 (+120% bonus AD) ⇒ 60/110/160/210/260 (+130% bonus AD)

W - Violent Tendencies

• Cooldown - 12/10.5/9/7.5/6 ⇒ 11/9.5/8/6.5/5 seconds

Master Yi

Base Stats

• Attack Range - 125 ⇒ 175

Q - Alpha Strike

• Pick and Choose - When Alpha Strike ends, Yi is placed 75 units in front of his primary target ⇒ By default, Master Yi will be placed 75 units in front of his primary target. During Alpha Strike, Master Yi may right-click to instead be placed 75 units in the direction clicked

W - Meditate

• Cooldown - 28 ⇒ 9 seconds
• Mana Cost - 50 ⇒ 40 + 6% maximum mana per second
• Damage Reduction During Meditate - 60/62.5/65/67.5/70% ⇒ 90% for the first 0.5 seconds, reduced to 60/62.5/65/67.5/70% for the remainder of the channel
• Lingering Damage Reduction - For 0.5 seconds after Meditate ends, but not exceeding a total of 4 seconds ⇒ For 0.5 seconds after Meditate ends

Olaf

Base Stats

• Health Regeneration - 8.5 ⇒ 6.5
• Health Regeneration Growth - 0.9 ⇒ 0.6
• Health Regeneration at 18 - 23.8 ⇒ 16.7

Passive - Berserker Rage

• Maximum Bonus Attack Speed - 40-100% ⇒ 60-100% (levels 1-18)

Q - Undertow

• Mana Cost - 40/45/50/55/60 ⇒ 50/55/60/65/70

Renekton

R - Dominus

• Magic Damage Per Tick - 25/50/75 (+10% AP) ⇒ 20/50/75 (+10% AP)(+10% bonus AD)

Taliyah

Passive - Rock Surfing

• Taliyah’s passive cooldown will no longer reset due to proc damage (like Liandry’s Anguish)

Q - Threaded Volley

• 1-Rock Damage 40/60/80/100/120 (+50% AP) ⇒ 45/65/85/105/125 (+50% AP)
• 5-Rock Damage 104/156/208/260/312 (+130% AP) ⇒ 117/169/221/273/325 (130% AP)
• Boulder Damage - 76/114/152/190/228 (+95% AP) ⇒ 85.5/123.5/161.5/199.5/237.5 (+95% AP)
• Mana Cost - 60/65/70/75/80 ⇒ 55/60/65/70/75
• Bonus Damage Against Monsters - 30 (+10% AP) ⇒ 25 (+10% AP)
• Hitting jungle monsters with Taliyah’s boulder (created when activating Q on Worked Ground) now stuns jungle monsters for 3 seconds

R - Weaver's Wall

• Weaver’s Wall no longer goes on cooldown when Taliyah damages wards or traps

Vex

Q - Mistral Bolt

• Cooldown - 9/8/7/6/5 ⇒ 8/7/6/5/4 seconds
• Magic Damage - 60/105/150/195/240 (+60% AP) ⇒ 60/105/150/195/240 (+70% AP)

Volibear

Q - Thundering Smash

• Bonus Move Speed - 10/14/18/22/26% ⇒ 8/12/16/20/24%
• Damage - 20/40/60/80/100 (+120% bonus AD) ⇒ 10/30/50/70/90 (+120% bonus AD)

W - Frenzied Maul

• Damage - 10/35/60/85/110 (+100% AD) (+ 6% bonus health) ⇒ 5/30/55/80/105 (+100% AD) (+5% bonus health)

E - Skysplitter

• Damage - 80/110/140/170/200 (+80% AP) (+11/12/13/14/15% of target's maximum health) ⇒ 80/110/140/170/200 (+80% AP) (+9/10/11/12/13% of target's maximum health)
• Damage Cap Against Non-Monsters - 750 ⇒ 650

This article was originally published on dbltap as League of Legends Patch 12.13: Champion Nerfs and Buffs.