This guide is for Master Yi in the jungle. I will be focusing mostly on Crit Yi, although I might talk a bit about the On-Hit style. Although many people give Nightblue3 credit for this build, it was played by some people before him. Anyway, this build is focused on dealing as much damage as possible, and you can carry games just by getting a few early kills.

Smite is used to clear the jungle, secure objectives, and get the Hunter's Machete so you can get bonus experience from jungle camps.

Flash is used to get out of bad situations and secure kills.

Pros:
Great Late Game
Good at Splitpushing
Can one shot carries with a small lead

Cons:
No range
No crowd control

You have 2 options for your early game clear. The level 2 invade and the level 6 power-farm.

Level 2 Invade:
This is for when you are against a weak early game jungler and want to get an early lead. You start at Gromp or Red Buff, depending on which is closer to your bottom lane. Next you walk to the buff in the enemy bottom side jungle.

Level 2 Power-farm:
This is for when you don't want to take any risks and want to get to level 6 as fast as possible. Start at Krugs or Gromp, and do a full clear but skip Red Buff and Blue Buff. Back, and do a full clear with a Scuttle Crab. Now you are 1 camp away from being level 6. You should be looking for a lane to gank so you can get a lead.

This guide is work in progress, and I will be adding more chapters on play style, ganking, and possibly some other builds.