This Udyr is played as a fast moving Jungler. He focuses a lot on being able to chase and escape from opponent champions, as well as some survivability with the proper use of turtle and his wicked life steal.

This build is very dependent on Madred's Bloodrazor, and so attack speed is a must. These speed runes will also help a lot with Wingborne Storm proc and allow for easy minion kills and farming. There is also some armor and magic resistance to help with survivability. This is chosen over health because there is a dependence on life steal, and the less health the easier it is to gain (while still allowing some survivability.)

Masteries are chosen to help with jungling, survival, and keeping up Udyr's passive- Bridge Between. Dodging, with some armor and magic resist, allows even this Udyr to have some off tanking ability. So long as he remains in the fight using his life steal, Udyr can really keep himself alive.

Madred's Razors are key for farming and jungling. They allow for easy minions kills in the jungle and to help fight back a lane push, or to do a push your self.

The Ninja Tabi give him some survivability that stacks really nice with his passive.

Wriggle's Lantern gives him some nice life steal, while still maintaining this farming ability. This item also has the free wards that can save a lot of money in the long run. Just be sure to be placing these all game. Jungling with Udyr means you should be placing wards often, and to be honest this free ward probably wont be enough alone. But it definitely helps.

Phantom Dancer is next because it gives Udyr the ability to catch and escape much easier. This attack speed is also crucial for the build. It allows you to get off your Wingborne Storm procs a lot faster.

Madred's Bloodrazor is next, and the goal should be to get to this item as fast as possible, and this means early farming is crucial. Though it's a little down the line of items to buy, you should be able to get this item before any, or at least most, big team fights break out.

The next items are optional. If you need more survivability, grab a Warmog's Armor or Force of Nature depending on who the main opponent is. I generally choose to grab another Phantom Dancer to make me nearly uncatchable, except by speedy gonzales Master Yi, and really wreck people with the Bloodrazor.

Smite is a must for jungling, and don't let anyone tell you different. Though it may be possible to survive in the jungle, it will be extremely slow. Just think what you would do having to fight packs of wolves and wraiths without an "I win" button.

I grab Ghost usually as my second. I find this ability to be really nice and versatile. It can be used to catch up to an enemy, get away from one, catch a friend that needs help with a bear stun, make it to the team fights, or getting to dinner on time.

An option for ghost could be Flash. I think it's a little more situation dependent, but can be really nice.

I say to choose whatever second ability as one that you know how to use best, even if it's not Ghost or Flash. I think both Clairvoyance and Fortify are really nice and helpful for the team.

To jungle, I like to start at the bottom golems. Use Smite on one, and kill them asap. Use a health pot for this. Then I go up to the wraiths, trying to line them up so my phoenix hits multiple. You probably want to use a pot after this as well. You may want to save it until you start fighting the next group depending. I go to wolves from there, then blue golem. Make sure you use health potions throughout to keep your health up.

I usually port back, grab items, then head to red buff. After I snag red, I try to get a gank in. Don't try too hard here though. If the opportunity doesn't come up, just move on and keep farming. If a gank is in spot, I let the team know whats up and ghost in. I use bear to stun, and try to power him down with phoenix. You need to be level 4 to do this, and preferably have some boots and red (though either will do).

Make sure to rotate your spells properly. I grab Wingborne Storm, hit 3 times, then swap over to Iron Mantle for a second to heal up. I then get to Wilding Claw for the attack speed, and swap over to Wingborne Storm as fast as possible. The attack speed carries over, and will allow you to get the 3 hits off for a phoenix proc much faster. I get into turtle again, and repeat.

Blazing Stampede is a very important move, but used for chasing and escapes, not the main rotation. To escape, I use Blazing Stampede and swap to Iron Mantle asap. Just rotate between these. Blazing Stampede lets you run fast (stun if you can do a tricky bush movement) and Iron Mantle shields. This shield will carry over to your next Blazing Stampede.

When hitting towers, make sure you rotate with Wilding Claw and probably Wingborne Storm to have the passive kill minions. Stay on Wilding Claw as long as you can, though.

Pros-

Fast
Good survivability with proper use of turtle
Good life steal
Great jungler
Good utility with stuns

Cons-

Will be target because of stuns
Needs to be farmed up and rich early
Can be CCed and kited

Thanks for taking a peak. Please let me know what you would like to see improved. This is my first build, though use the site a ton for tips myself. Still don't know all the tricks to build writing, so I welcome any new ones! Thanks!

-Shadowmeld