League of Legends 25.21 Patch Preview Notes are here and include a handful of buffs, nerfs and adjustments. Check out the full patch notes for additional details from @RiotPhroxzon on X (source).

Dr Mundo
- Mundo is showing up frequently in our frustration surveys as the most or at least one of the most frustrating champions
- He sports a pretty average winrate and a pretty shallow mastery curve, so isn’t overpowered, but players have been pretty frustrated by him
- We’re making some power neutral adjustments to make his late game bonking a little less oppressive, but in return he’ll be able to go where he pleases a little better
Graves
- Graves is much more popular in China than rest of the World, but despite that, his popularity elsewhere has taken quite a bit of a drop
- We’re looking to add back one of the feelsgood changes that make him a little more general and bruisery as without it, he’s not able to hit the thresholds to play some of those bruisery builds
Yunara
- We’re making changes to Yunara to give more power to her W max 2nd, which is both utilized better by regular players and can feel relatively limp when not being maxed (W rank doesn’t affect RW damage)
- We’re also moving Yunara’s E from being a short burst repositioning tool and removing the decay
Bard
- Bard‘s tanky builds have been the norm for quite a while, we’re making his AP builds slightly more viable
- While we don’t hate that he’s building Deadman’s Plate (he does love running around a lot), it would be nice if AP was a bit better on him
Qiyana
- Qiyana from Ixtal is a bit too strong in the jungle (and a little too strong in Mid as well)
- Our changes nerf her repeated farming speed a little bit (Q does a lot more damage to Monsters)
- But otherwise, she’s brought a lot of life back into the jungle
Systems
- This patch seeks to make Mid lane in particular a bit more interactive through nerfs to second wind, dorans shield, a small nerf to Catalyst (we still like it being strong as a situational option for typically immobile mages to hold off Assassins/Skirmishers)
- We acknowledge that this is probably going to require some follow up adjustments to Top lane lane dominant champions, and we’re starting with a pre-emptive nerf to Quinn
- We wanted to be cautious as these changes would have wide ranging impacts for the playoffs metas and so feel more comfortable making these changes now
Gwen
- Despite our best efforts, our Gwen changes haven’t had the effect we desired
- So we’re going to be reverting the vast majority of the Gwen changes
- We wanted to apologize for the Gwen community for the whiplash over the changes
Qiyana
- Qiyana has still been posting a bit too strong numbers in Elite in both Jungle and Mid, so we’re tapping her down a bit more (Jungle especially more so)
Yunara
- While Yunara has still been relatively popular in higher levels of play on her current tuning, we’re wanting to embrace some of the parts of her kit that are a little underwhelming
- The changes this patch attempt to try to make W max 2nd a more reasonable way to play her that makes her a bit less binary
- Secondly, we’re changing E from being a decaying movespeed buff to be static
- Both of these changes are intended to make her a little easier to play, while still keeping the top end pop off moments that she’s known for