Patch 6.4

Champions:

Ahri

Charm no longer stops dashes in their tracks.
E - Charm
REMOVED:STONE COLD FOX Charm no longer interrupts dashes (Charm will still apply after their movement ends)

Ashe
Q - Ranger's Focus
FOCUS ENERGY Focus stacks fall off entirely after 4 seconds ⇒ fall off one at a time after 4 seconds
ACTIVE DURATION 4 seconds ⇒ 5 seconds

Caitlyn
W - Yordle Snap Trap
INCREASED HEADSHOT DAMAGE ON TRAPPED TARGETS 10/20/30/40/50% ⇒ 30/70/110/150/190 + 0.7 attack damage
TRAP CLARITY Snap traps now display their area-of-effect range to Caitlyn
E - 90 Caliber Net
COOLDOWN 18/16/14/12/10 seconds ⇒16/14.5/13/11.5/10 seconds

Ezreal
R - Trueshot Barrage
COOLDOWN 80 seconds ⇒ 120 seconds

Fiora
W - Riposte
COOLDOWN 19/18/17/16/15 seconds ⇒24/22/20/18/16 seconds
E - Bladework
COOLDOWN 15/13/11/9/7 ⇒ 13/11/9/7/5 seconds
LIMITED BLADEWORKS Cooldown now starts on cast ⇒after second hit

Gangplank
Q - Parrrley
GOLD PLUNDERED 4/5/7/6/8 gold ⇒ 2/3/4/5/6 gold
E - Powder Keg
MAXIMUM BARRELS 2/3/4/5 (with rank of R - Cannon Barrage) ⇒ 3 at all levels
AMMO CHARGE TIME 18/17/16/15/14 seconds ⇒18/16/14/12/10 seconds
R - Cannon Barrage
REMOVED ANOTHER ONE No longer increases the maximum number of barrels per rank

Illaoi
R - Leap of Faith
THIS IS MOTION Illaoi is now immune to being displaced while in her cast animation

Katarina
Q - Bouncing Blades
DETONATION RATIO 0.15 ability power ⇒ 0.2 ability power

Kog'Maw
General
BASE ATTACK SPEED 0.665 ⇒ 0.625

Lucian
R - The Culling
RANGE 1400 ⇒ 1200

Malphite
General
BASE HEALTH REGEN 8.374 ⇒ 7
E - Ground Slam
BASE DAMAGE 60/100/140/180/220
⇒60/95/130/165/200

Rumble
E - Electro Harpoon
NEW FULLY LOADED Now works on an ammo system (max: 2 charges)
NEW RECHARGE TIMER 1 charge per 5 seconds
COST 10 heat per charge
SLOW DURATION 3 seconds ⇒ 2 seconds

Ryze
Q - Overload
DAMAGE 60/85/110/135/160 ⇒60/95/130/165/200

Shen
E - Shadow Dash
RIVER CONTROL Now affects monsters (including Rift Scuttler)

Sivir
W - Ricochet
SPREAD IT AROUND If Ricochet's primary attack is a critical strike, all of that attack's bounces will crit as well

Tahm Kench
Q - Tongue Lash
90 ⇒ 70
R - Abyssal Voyage
DELAY BEFORE RECAST 0 seconds ⇒ 1 second (total travel time unchanged)

Udyr
W - Turtle Stance
SHIELD AMOUNT 60/100/140/180/220 ⇒60/95/130/165/200
R - Phoenix Stance
ON-HIT DAMAGE 40/80/120/160/200 ⇒40/75/110/145/180

Viktor
E - Death Ray
DAMAGE 70/115/160/205/250 ⇒70/110/150/190/230

Xin Zhao
W - Battle Cry
HEAL RATIO 0.7 ability power ⇒ 0.4 ability power
ATTACK SPEED 40/50/60/70/80% ⇒40/45/50/55/60%

 

Items

Boots of Swiftness

Movement speed down.

The hottest kicks on the Rift, Swifties are removing decisions when it comes to boot purchases. Now that the impact of 'more speed, cheaper cost' is well understood, we're pulling back just how much quicker they're making you. Still fast, still cheap, just not as strong.
MOVEMENT SPEED65 ⇒ 60

Mercury's Treads
More tenacious!

Merc Treads haven't been scratching the 'Buy me against hard CC' itch they're intended to for a while now. With most players opting for cheaper boots (or more movement speed), we're upping the effectiveness so Merc's are once again the go-to footwear when you're jumping head-first into a moshpit of stuns, fears, taunts, and Nautili.
TENACITY20% ⇒ 30%

Manamune
Now has Tear of the Goddess's stacking passive

Sitting on Tear of the Goddess is a gamble - in most cases, you're going for an item that gives you very little combat effectiveness for a big payoff (once you upgrade). While the 'Tear = weak' part is holding up decently, folks who wanted Manamune found themselves putting off their sweet mana sword because there would be certain situations it would actually be harder to stack than its component gem. While the decision on when to upgrade is compelling, we don't want 'Manamune's stacking is just worse' to be the deciding factor.
NEWMIND OVER MANANow gains +1 mana every 8 seconds

Muramana
No longer a toggle. Now always consumes mana to deal damage, but only when fighting champions.

Borrowing from the Manamune section, the payoff to Tear-stacking is the promise of a huge power-spike once you've made your transformation. With Muramana, this wasn't always the case. In theory, Muramana uses your resource bar as a means of overloading your damage output - in reality, the cases where folks would burn so much of it on farming minions (or simply forgetting to toggle it on) left the item's performance lackluster.

These changes are about increasing accessibility such that you can count on the power that Muramana provides rather than chalking it up to human error why your big item purchases didn't help you win that last teamfight. The decisions around when you'd toggle it on or off are mostly kept in this iteration (vs minions: conserve mana, vs champions: FIRE EVERYTHING), and the gains to reliability outweigh the costs. Besides, Urgot's got enough to worry about without having to remember if he left the Muramana stove-light on or not.
REMOVEDHAVE IT YOUR WAYCan no longer be toggled 'on' or 'off'
NEWPASSIVEShock - Single target spells or basic attacks on champions consume 3% of your current mana and deal twice that as bonus physical damage. This effect only triggers when you have more than 20% maximum mana.

Enchantment: Runic Echoes
Movement speed down.

By the numbers, Runic Echoes has been a more than suitable replacement for Runeglaive. Using it profitably has serious returns, gaining a leg up in map pressure over other junglers due to its high movement speed. We're happy that magic-damage dealers of all kinds are finding success in the jungle, but it's clear that the map mobility it provides is shutting out other enchantments (and the junglers who use them) from feeling like they can compete.
MOVEMENT SPEED10% ⇒ 7%

Iceborn Gauntlet
Size lowered, but gets larger with armor. Slow no longer lingers.

Thanks to the lingering slow, Iceborn Gauntlet's passive favors champions that apply it from rangeconsistently over the fighters and tanks it was made for. We're adjusting to make armor purchases more impactful, making it about when and where you drop your ice field over how quickly and safely you can do it (after a 5-man Malphite ult, perhaps?)
REMOVEDRUNNING THE GAUNTLETSlow no longer lingers after leaving the icy ground
SIZE RATIO0.45 bonus armor ⇒ 0.55 bonus armor
BASE SIZE190 ⇒ 180

Sterak's Gage
Health down. Build path changed.

Originally intended for Juggernauts to feel good about wading into battle, Sterak's finds itself protecting marksmen from burst more often than aiding your standard beefcake. In a vacuum, this is okay - but when it starts covering the intended weakness of marksmen (that is, being soft to all-ins and assassination), the lines start to blur. By tuning down the base health, we're making Sterak’s less of a one-stop shop defensive item (as its shield scales directly off maximum health). Tank champions will continue to stack health anyway to take advantage, while squishier champs are getting both less base health and less of a shield from that fury proc.
HEALTH500 ⇒ 400
BUILD PATHJaurim's Fist + Ruby Crystal + 1100 gold ⇒Jaurim's Fist + Long Sword + 1150 gold
TOTAL COSTUnchanged

 

Masteries

Warlord's Bloodlust

Now gives lifesteal based on your missing health.

As is, Warlord's Bloodlust has two main problems. For starters, it's incredibly narrow - while certain Keystones might restrict you to attacking so often or doing certain thresholds of damage, Warlord'sspecifically requires you to crit. While being narrow isn't always bad (Windspeaker's Blessing is fine being taken by supports only), the heavy skew towards marksmen when Fervor and Thunderlord's are alsogreat options make Warlord's superfluous (particularly when other classes could benefit from the space).

Aside from its intended audience, Warlord's has always captured a lategame fantasy while giving you nothing immediately - a tradeoff that people just aren't excited to make. These changes take a crack at killing two birds with one key-stone. Removing crit broadens its application significantly, making Warlord's especially synergistic with 'all-in' fighters like Aatrox and Olaf that capture the spirit of the Keystone's concept and giving it more reasonable scaling over the course of the game. If you like to fight to your last breath (and then some), look no further.
NEWFOR THOSE WHO FIGHT FURTHERAttacks on champions gain increasingly more Lifesteal based on your missing health (up to 20%). Half effect vs minions.
NEW
Expose Weakness
New Mastery added to Ferocity Tier 1

Like the Assassin mastery some patches back, we're adding Expose Weakness as a means to assist offensive supports. While many are perfectly happy with their Bonds of Stone and Windspeaker's Blessings, incentivizing a dip into Ferocity should appeal to the bloodthirsty supports out looking for, well, blood.
FRAUD DETECTEDDamaging enemy champions causes them to take 3% increased damage from your allies