Overview
The final patch of Set 15: K.O. Coliseum is here, and with it comes a bunch of buffs to spice up your last two weeks! You can read the full notes for Patch 15.9 here.
As always, be sure to check out our comps page to get access to the best comps to play and the data to support it here.

Buffs
Traits
Prismatic Traits easier to hit
Battle Academia: 160 items required -> 140
Star Guardian Mana Breakpoint -> 18500 -> 16000
Viego is now an Edgelord
Mighty Mech
5 piece mana buffed
Units
1-cost
Aatrox damage increased
+10 base AD
Spell damage increased
Ezreal AS on cast increased
2-cost
Lux mana cost decreased
Xin Zhao
-100 HP
+`10 AD
Innate 10% omnivamp
3-cost
Caitlin AS increased
Jayce spell damage increased
Senna spell damage increased
4-cost
Karma spell damage increased
Nerfs
Traits
Edgelord (4) -10 AD
Notable Power Up Changes
Returning Power Ups (previously deemed too strong)
Frost Touch
Fusion Dance
Stretchy Arms
All Out AD buffed
Shadow clone added to Ryze, Janna, and Braum
Conclusion
The patch should not adjust much at all from the B patch, we already addressed the biggest outlier in Mech. This may make Kai'Sa reroll a bit more playable again, so keep an eye on her, but in general this should be a fairly balanced patch with a lot of playable lines.