This Master Yi Ability power build, playing middle lane, really requires a lot of map knowledge since you gotta gank as much as your own jungler, to get some frags rolling.
Remembers never waste your heal, Only use it if you are low, and the middle lane from the other team have popped a few CD's so he can't stun or cc you if he can do that, if he can't CC you, then keep on herrasing him as much as you can.. not much to say about this build, only that it gained me 400 elo in ranked games thanks to Master Yi ap, try it out in a normal game and lets see how this will work for you :)!

J0ez