Vayne has settled into a fairly weak spot, and while we still aren't totally happy with her top vs bot skew, we're getting closer. We're adjusting her base stats to help in bot where she needs to weather harass, and reverting a mana cost to her Q that simply felt way too bad.
Finally, next to the changes to boot rewards in midlane, we are also adjusting MR for all ADC champions to help them out against mages early game. We also hope this will help a few of them in mid lane, where we believe a healthier pool of AD champions (including potentially Akshan and Tristana) will also help create a more diverse jungle meta beyond AD fighters.