Some new balance changes have arrived, and as usual I'll give them the old analysis once over.
The changes to Akali will have a semi-significant impact on her laning. While technically speaking she'll do more damage part 300 Ability Power, most games are decided before Akali could reasonably acquire that much power. You basically need a 3-4 item build finished before you cross that threshold.
Corki hasn't seen much play as of late. These changes help him a little, as missiles have been a limiting factor for him for some time. His lack of play is really an oddity in any case, so if you were on the rocks about playing him before now is as good a time as ever to pick him up.
Karma sees a few adjustments to her abilities. These are almost entirely quality of life buffs. Beyond making her Mantra easier to access through buffs to her passive and its activation, her most important change is to her Focused Resolve. Now that using Mantra charges automatically gives the 60% speed boost she no longer has any abilities who gain Mantra benefits for being skilled up.
The cast range reductions on Kayle's abilities are steep. Dropping her utility to 900 range forces her to stay much closer to a fight in order to ensure she can save or aid allies in need. However, this primarily affects Support Kayle, as any other form of Kayle is already going to be in the thick of it or near a needy ally.
Lux will no longer be able to instantly clear a creep wave every 24 seconds. Instead, she'll be able to clear a creep wave every 30 seconds. Ultimately (har har) she hasn't been significantly hurt, save for those foolish enough to consistently overextend while laning.
Morgana, Nami, Nautilus, and Nunu all got minor tweaks to make them more competitive. I'm of the opinion that it's largely unnecessary in Nami's case. Nami is good, but before anyone could get used to her Thresh (who is clearly amazing) arrived. Morgana and Nautilus' changes are mostly friendly bumps to remind you these champions exist and are good. Nunu, however, is still on the edge of competitiveness.
Quinn had a few significant playability issues which have now been addressed. Valor's mark timing was such that it was extremely common that you would start to attack a target, and before you finished Valor would have started to mark it. However, because your attack was in the air before he finished marking you'd fail to get the proc, resulting in no benefits and a 10 second wait for the next mark. This is a little more rare now, and along with her Vault change should improve her popularity slightly.
Volibear got a slight nerf. He's still extremely strong, especially when ganking, so don't freak out if you love jungling as a bear.
Jungling is now different, thanks to changes to the items which build out of Spirit Stone. They now all cost 2000 gold. In order to effect this change, Spirit of the Elder Lizard received a slight nerf, and Spirit of the Ancient Golem traded its Armor for Cooldown Reduction, with a slight change in recipe. This will incidentally also make it easier for jungle tanks to get the Cooldown Reduction they need to spam their utility.
Overall there were any crippling nerfs or incredible buffs, nor was there anything out of the ordinary. However, there were significantly more buffs and quality of life changes than nerfs this patch, which reverses the previous, concerning trend where almost everything was a nerf. Good show.
