A massive and mostly great patch with tons of changes but also a lot of really good changes.

• Item changes are mostly fine and changed items are ok. Not great, not bad, just a bit more stiff in terms of slot options (locked to 1st/2nd or 3+)

Buffs:

• Amumu: Does awesome in lower elos and is still ok in higher ones except for master+.
• Vex: Like Amumu she is also great in lower elos but she differs in that she isn’t as bad in higher elos. She also falls off but only a tiny bit. Here we might see nerfs in a few months, once people found out.
• Kennen: His buffs didn’t look that big, but these were massive. He performs fine in lower and really well in higher elos. I would say a pro play threat next split for sure.
• Sejuani: She does well in soloQ now. Likely OP in pro play but has to be seen how the scaling buffs actually impact her in lower gold income enviroments.
• Seraphine: She is better in support and bot, but in support mostly because people skill her wrong. Still nobody wants to play her bot. PR went from 0.3% to 0.5% only and the WR is around 53.5% which is fine for sure even for such a low PR.

Nerfs:

• Nilah: For being so niche and low elo skewed she is likely a bit overnerfed but the direction towards more DPS is still nice.
• Master Yi: Overnerfed and Riot can likely revert 50% of the nerf to hit something slightly below 50% WR.
• Olaf: He is nearly unchanged in the jungle but weaker top. His R feels lackluster later on.
• ASol: I would say a tick overnerfed. The E nerf was likely not needed after the hitbox nerf.
• K’Sante: I would say dead now also in pro play.

Size changes:

• Hitbox size: These changes were definitely felt by most champs but not all. Laners mostly feel it while junglers not so much. Briar only feels the nerf because her items were also nerfed. +-10 hitbox size is ~0.8-1% WR delta it seems.
• Clickbox size: This one is actually very interesting, too. If your champ got a ~+40-45 increased click size you are likely ~1% WR down in lower elos and ~0.7-0.0% down in higher ones. Examples for this are Garen, Jayce, Diana, Yone and then we have the outliner Yasuo. Garen for example lost ~1% WR overall but in higher elos 0%. His overall WR is now 50.8% and in Dia+ 50% which means he is only slightly low elo skewed. Same has nearly no elo skew anymore.

I use Gold+ data as default as it is very close to Plat+ but with a larger sample size. Other elos can be seen on the website.

Champ Data: % PR increases are +-% numbers with the last patch being the base line. I do this because a 1->2% has a larger impact than a 10->11% PR change.

• e.g.: 2% -> 5% = +150% (2.5 times as high as before)

Item Data: Below each item you then find all champs using that item in that slot. The data below the champ picture is the AVG item WR of that slot for that champ. Next to that you find the item data for that champ with the curreent data.
Links: Champ icons are links to LOL Wiki. The role next to the icon is a link to LoLalytics