This is my first build, so it's not going to be very in depth, it's really just the skeleton.
I'm providing the skill sequence and the item sequence, it's up to you to create your own strategy out of this.
This build is also more suited for 3v3 Treeline, in 5v5 you'll be a very high threat target resulting in more deaths on your part.

Pros:
End game, you'll be a VERY strong jungler
Depending on the champions you're fighting you'll be able to take all 3 on at once (In twisted treeline of course)

Cons:
You'll have very little defense, so you WILL die, but if you do it right, you should be able to get one or two kills before that happens.
Very had to escape unless you slice/dice across walls
To help with this you can switch out exhaust for Ghost
(The thickest wall in the game you can slice/dice through is the wall right below the dragon, it provides a good way in and out of fights, use this area to your advantage)

Try to have the best possible map awareness you can, you should always be ready to jump out and gank an enemy.