I'm going to write all the extra info just in a few lines, don't wanna make you read many lines in vain...

First of all, Master Yi is an extremely farmer Champion, with Alpha Strike you can get a lot of money, so, the equipment that I propose is not a problem.
Also, Alpha Strike takes you to your oponents in case they're attempting to run or hidding behind a tower with low HP.
As soon as you can, you should get Wuju Style, this has this passive that adds 15 points to your attack damage, so, you'll kill minions and enemy champions faster.
Meditate can help you to keep the lane, this sometimes helps you to level up faster... I don't like to use it 'cause it spends LOTS of mana and under my point of view it's not worthed... but on several occasions this takes you out from uncomfortable situations...
And finally the skeleton of this build... The amazing Master Yi's Ultimate... HIGLANDER... this is, under my point of view, one of the most helpfull abilities in the game... HIGLANDER makes you UNSLOWEABLE, and also turns you into a Tower/Inhibitor/Nexus/Buffers/Heros/Whateveryoucanfreakinimagine killing machine...

Now I'll tell you why I choose the summoner skills that I always choose...

When I started playing with Master Yi, I'd started Choosing Ghost and Revive, but, Master Yi is really fast... and Ghost was not worthed... then, while winning more experience in the game, I reallized that sometimes I lost matches where the other team had no inhibitors and sometimes no central towers either... then I started using FLASH (revive is questionless, it saved me from loosing matches LOTS of times), you may ask, Why flash?, and the answer to your question is quiet simply... If your enemies have no inhibitors and they are pushing into your base, what you only have to do is get near enemy's base through the jungle and then use flash to get in their base, and using HIGLANDER the win is up to a few seconds.

So, I think that that is all you need to know, my gameplay is really simple but also is extremely hurtfull.

If you reached this line, please, don't forget to leave a comment!, thanks for reading!