Master Yi Build
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.
If you want to see some advanced Master Yi Gameplay i would reccomend you check out some of Cowseps Videos or some Montages. They really let you master the Champion.
I personally started playing Yi again because of this (old) but super awesome Montage Video: