Hi! I'm Ozone0802 and I'm a Yi main. This is my guide to teach you how to get ez pentas and generally just do really well

I take devourer for attack speed (Yi's bread and butter) and on hit, skirmishers for the extra damage with challenging smite, guinsoo's for the stacks of guinsoo's rage, dead mans plate for extra mobility and tankiness, BotRK for attack speed, a bit of damage and lifesteal and bloodthirster for the damage and sustain the lifesteal provides. I tend to take berserker's greaves more than any other boot type for the extra attack speed it provides, however you may wish to take merc treads for the slow resist. You can also take Merc Scimitar for its active or Maw for its passive

I usually go with Fervor due to Yi being mainly auto attack based with his high attack speed being able to pull off full stacks very quickly