Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
This build was taken from Leaguetopten's YouTube channel, which goes over basic strategy. I did not create this build, just posted it here in build-mode.
This build uses Kayle's passive to turn her into a powerful caster by using hybrid items such as Guinsoo's Rageblade and Hextech Gunblade. See Leaguetopten's Youtube channel for more information on this and many other builds. (Note: This video was created before Kayle's E was patched, it no longer affects towers.)
***I often see great builds online, but many are a little confusing and not very easy to use. I want to try and bring these builds here to this site, so that they can be easily accessed and their creator's good work can be of even greater use to us all.***