The marksman class has major durability problems, especially in the early laning phase where their power feels heavily reliant on their supports. This has been causing issues in gameplay satisfaction since a marksman's strength relies on the length of time they're alive. By increasing their mobility (via items) and base health, we feel that ADCs won't be punished so aggressively when they fail and will still have a chance to bounce back and unlock their power in fights.
That being said, we've heard your concerns about the bot lane marksman champions that can also solo lane like Lucian and Vayne. We're giving them a separate set of changes which you can find more details on below.
We’ve also omitted Corki, Kindred, Quinn, Senna, and Graves due to having their primary playrate in other lanes, with the understanding that Senna may be considered for similar changes in the coming patches.
MOVEMENT SPEED : [5%] ⇒ 7%
Crit increased, attack speed decreased. Build path updated, cost increased.
Zeal's crit stats got a lot bigger from switching to Cloak of Agility. We dropped its attack speed a bit so we could avoid having to raise its cost too much to keep it balanced.
TOTAL COST : [1200 gold] ⇒ 1400 gold
| BUILD PATH :
||[Brawlers' Gloves + Dagger + 500 gold]
||Cloak of Agility + Dagger + 300 gold
CRITICAL STRIKE CHANCE : [15%] ⇒ 25%
ATTACK SPEED : [15%] ⇒ 12%
MOVEMENT SPEED : 5% (unchanged)
TOTAL COST :  ⇒ 1200 gold
COMBINE COST :  ⇒ 600 gold
TOTAL COST : 1300 gold (unchanged)
TOTAL COST : [1200 gold] ⇒ 1300 gold
CRITICAL STRIKE CHANCE : [20%] ⇒ 15%
COST : [1300 gold] ⇒ 1200 gold
Zeal and all of its items cost more.
We don’t want to delay marksmen from participating in the game for too long, but their ‘1.5 item power spike’ is presently pushing them over the edge. Zeal’s newfound cost-efficiency is one of the culprits of this early-midgame bump, so we’re taking a little off the top to keep the pacing and power-growth of marksmen one that all can keep up with.
TOTAL COST :  ⇒ 1300
COMBINE COST :  ⇒ 600
ALL THE WAY DOWN : Total costs of all items building out of Zeal are also increased by 100
TOTAL Cost : [1100 gold] ⇒ 1200 gold
BUILD Path : Dagger + Brawler's Gloves + 500 gold
- ATTACK SPEED:
18% ⇒ 20%
- TOTAL COST:
1175 gold ⇒ 1100 gold
- Attack Speed reduced from 20% to 18%
- Movement Speed reduced from 6% to 5%
- Cost reduced from 1,195 (375) to 1,175 (375)