Corki
General
SOON:Soon.
This is just riot joking about the seemingly annual Corki buffs before worlds.
Kassadin
R - Riftwalk
WAS MORE LIKE A RIFTSPRINT:12 seconds ⇒ 20 seconds
This change is a substantial nerf to Kassadin. What this actually is is an increased cooldown on the refresh of his mana cost and damage on his ultimate. Kassadins will have to commit fully when engaging now. He still does a lot of damage however, and he has his match-ups. He will see a lot less competitive attention, but will probably still be banned in solo queue, as players ban him simply out of custom.
Kog'Maw
General
BASE MOVEMENT SPEED:330 ⇒ 325
E - Void Ooze
WHEN DID YOU EAT THAT, KOG'MAW:Has new particles, looks more gross
R - Living Artillery
BONUS BASE MAGIC DAMAGE TO CHAMPIONS:125% ⇒ 100%
Kog is still too safe for a hypercarry. These changes are negligible. I think Riot should consider reducing their base health even more.
Maokai
W - Twisted Advance
BASE MAGIC DAMAGE:9/10.5/12/13.5/15% max health ⇒9/10/11/12/13% max health
ABILITY POWER RATIO:+4% max health damage per 100 AP ⇒ +3% max health damage per 100 AP
R - Vengeful Maelstrom
NEWMAXIMUM DURATION:10 seconds
The tree came from nowhere in 4.13. After realizing the damage and tankiness that Maokai brings, he suddenly a 100% pick/ban champion. The damage nerfs don't hurt him too much, but the ult change stings. I like these changes a lot, but I think Maokai will still be a great pick in this patch competitively.
Morgana
E - Black Shield
BASE SHIELD:95/160/225/290/355 ⇒ 70/140/210/280/350
R - Soul Shackles
BASE MAGIC DAMAGE:175/250/325 ⇒ 150/225/300
TOTAL POSSIBLE MAGIC DAMAGE PER TARGET:350 / 500 / 650 ⇒ 300 / 450 / 600
Morgana will still be one of the top three supports. These changes don't address the ridiculous duration and size of her binding. I don't understand when these stats remain unchanged, while Elise's cocoon width was nerfed last patch. I just don't know.
Orianna
General
BASE ATTACK DAMAGe:47 ⇒ 41
This scratches Orianna's early game a bit. She can't CS as well or punish as hard anymore, but her mid and late game versatility will keep her a top pick.
Rengar
General
BUG-FREE KITT:YFixed a rare bug where Rengar would not leap from a brush if he recently flashed into it
Head of Kha'Zix
NEWDON'T ASK HOW THIS WORKS:Rengar now has increased vision range while in a brush with the Head of Kha'Zix
R - Thrill of the Hunt
NEWX-RAY CAT FINDER:Warning indicator now appears even if Rengar is in the fog of war while stealthed. In other words, if Rengar is within 1250 range of any opponent while stealthed via Thrill of the Hunt, they will be notified.
LONG RANGE CAT FINDER:Warning indicator range increased from 1000 ⇒1250
COOLDOWN:120/95/70 seconds ⇒ 150/110/70 seconds
These R nerfs make engaging stealthily harder, but tank rengar forces engages anyway. Nerf to Assassin Rengar.
Zed
R - Death Mark
NEWTHE UNSEEN ZED IS THE DEADLIEST:When Zed uses Death Mark on a target, he dashes in front of them ⇒ behind them
NEWTHE UNBLOCKABLE ZED IS THE DEADLIEST:Zed now ignores unit collision while the Death Mark is active on a target
Zed saw some reason play in LCS and OGN, so he's obviously competitively viable to some degree. According to a Redditor, these buffs are to give this flashy assassin some play at worlds. I'd have to agree.
Honorable Mention:
Arcade Rihanna Miss Fortune is being released this patch, along with Gnar. Ultimate skin hints everywhere. Yasuo? Kha'Zix? Xerath? Find out next episode.
W - Headbutt
Q - Boulder Throw
Q - Boomerang Toss
R - GNAR!
Q - Acid Hunter
R - Hyper-Kinetic Position Reverser