Overview
We’re going to give you a quick rundown of key points from the latest patch. You can also see how these changes have affected the meta by looking at our Champion Statistics page, which highlights changes in Win Rate between patches.
The wait is over as Yunara finally joins Summoner's Rift -- she'll be the latest ADC to join the roster, and her auto-attack focused kit should be a welcome addition to ADC mains. A new meta-game called Battle of Koeshin, a 2D side-scroller, will be available for a short time with her launch!
For a full breakdown of exactly what has been changed, check out Riot’s official patch notes here.

Battle of Koeshin and Koeshin's Courtyard

2D Sidescroller
Yunara and Xin Zhao are playable characters
Three levels of gameplay
Completing it will give you the Shrouded in Bloom and Blessings Upon You icons
Koeshin's Courtyard unlocks after completing the Battle of Koeshin. It's a spiritual successor to Spirit Bonds.

Complete missions by playing League! You need 20 petals to claim all of the awards.
Champions
Buffs
Azir (Base health increased. W damage increased.)
Briar (R cleanse also applies 1.25s CC immunity during cast animation after missile hits.)
Darius (Q heal increased.)
Fiora (R healing per second increased.)
Fizz (W cooldown reduced at higher ranks. E AP scaling increased.)
Ziggs (Q damage increased late. E damage increased late. R damage adjusted.)
Nerfs
Braum (Base armor decreased.)
Lee Sin (Base AD decreased.)
Riven (Passive AD ratio decreased late.)
Sett (Armor growth decreased.).
Twisted Fate (Q damage decreased.)
Yasuo (AD growth decreased.)
Yuumi (R heal per hit decreased.)
Zoe (Q and W damage decreased.)
Changed
Kled (All abilities adjusted to be more fighter oriented rather than assassin.)
Items
Blade of the Ruined King (buffed)
Haunting Guise limited to 1 in inventory
Karken Slayer (buffed)
Phantom Dancer (buffed)
Rod of Ages (buffed)