League of Legends (LoL) Question: lifesteal critical top master yi?

If you're going to play Master Yi top I'd recommend grabbing Flash + Exhaust first of all because that way you can 1v1 nearly any opponent without them getting away. Early on you focus attack speed and life steal first by rushing Blade of the Ruined King so that means you need prolonged fights to kill your enemy. Exhaust will keep your enemy from running from you and allow you to easily out damage basically any other top laner. So that is your ticket to killing your enemy. I generally wait until my first back before going all in with Exhaust and before my first back I play safe and make sure I recall after my opponent.

Once you have Blade of the Ruined King you will likely want to rush Bloodthirster and Berserker's Greaves. I wouldn't go attack speed, life steal, and crit though. I'd choose attack speed + lifesteal or attack speed + crit. I find that lifesteal is normally best for cleaning up all the enemies solo after your team loses a team fight badly though. Crit is what I grab when my team is ahead.

I don't play Yi top but you could try something like this:

This guide? just go top and dont buy the jungle item 100% critical strike chance + 40% cooldown reduction