Yi wrecking everything by Jehtte, on Flickr

Welcome to my own little strategy log of the Master himself, Yi! To be blunt, this build isn't meant for competitive play, but I personally find it to suit my playstyle INCREDIBLY well! To sum it up in a few sentences: Lay low, get in, draw blood, get out. If you do it right, they won't be certain what happened until they check the death report! Later when your built, hunt strays, clean up team fights, backdoor when given the chance and otherwise make the enemy team's life as difficult as possible!

Pros
You can move really fast and kill really fast!
Stray champions are tasty!
Fleeing champions might as well kill themselves!
Excellent threat late game!
Luck can make your clear time ridiculously quick!

Cons
REALLY REALLY REALLY SQUISHY!!!! Get in, draw blood, get out!
Often focused in team-fights!
Only viable with pre-made team!
Luck can make your clear time sub-par at best!

These are simply the runes I am running at the moment. I recommend you pick runes to better suit your own needs. I use armor pen quints and marks rather than damage because they have better numbers, especially since I don't build armor pen items. I use Armor and MR Seals and Glyphs for all around defense.

I use ALL flat runes rather than scaling. The reason is simple: The stronger my early game, the better my farm. A fed champ is superior to a denied champ, period.

These are pretty self explanatory, I will note that I do not take life-steal here, I instead take damage vs minions/towers for maximum back-door efficiency!

Many of you may think when looking over this build, "But Jehtte, You never pick up meditate! Are you mad?" To which I would respond, "Absolutely!" But seriously folks, I've found that once I pick up Wriggles, I have absolutely NO need of this ability. I instead find that if I play a little smarter until I finish my wriggles and boots, the rewards of the life steal plus higher AD (wuju) AND a stronger alpha, Greatly outweigh one level of meditate early game.

I take alpha first as my primary jungling tool. It occasionally allows you to WRECK your jungle, picking up a clear including red and blue buff in just about 2 minutes, and then it's ganking time, which means...

An enemy has been slain. First blood!

Wuju then becomes the focus maxing it as early as possible taking additional ranks in alpha when possible.

This is the part where this "guide" becomes kinda useless. I don't think I have ever built these items in the exact same order twice, and a game has never lasted long enough to trade wriggles out. I'll often finish Wriggles before boots of swiftness, and I occasionally build my BF Sword early if I get the opportunity.

This is where you score the most sick frags. I recommend playing AO-Slamonoclast in the background for maximum efficiency. Okay I kid, but seriously, I start at golems, preferably with a leash. Burn smite on the big guy, head to wraiths. Then pick up blue. This is where you need start thinking for yourself. Is a lane overextending? Pick up red and make them pay. Are they being defensive? Skip red, farm more. back only when life and mana are low.

This one is important. I have a group that I usually play with, and that is what allows me to pull this off. You really need to communicate with your laners in order to effectively cover your team. Wards wards and more wards, as jungle your kinda the teams lifeline. The easier you make your teams life the better. Also never stick around for too long. Never push or farm a lane without permission, and if more than 10 seconds goes by without Yi killing something you're not playing him right.