Focuses on Health and attack speed to increase your life steal ability. Your health will allow you to stay in lane and your attack speed + your passive with minion kills will allow you to lose virtually no health in lane.

Follow AD and attack speed through the offensive tree, but skip on armor penetration because its not the focus of the build. But add in your critical chance for increased damage and life steal with your Q. and with your last 7 points put them in armor, summoners resolve, and health regen to allow you to gain health even when not life stealing

1.Begin with your Q for life steal + your passives life steal + Vampiric Scepters life life steal. 2.Then go to your W for increased attack speed for quicker life steal. 3.Then back to your Q for more life steal%. 4.Then your E to allow you to chase (passive movement speed when enemy is below 40% health). 5. Back to your howl for some added attack speed for easy farming. 6. Always go with your Ult at level 6. This is more for a stun in team fights and to allow for a focus + engage. 7. Go for the Q again, this will allow you massive life steal for having not recalled yet. 8. Go back to the howl, this is not for increased attack speed for a jungler coming to gank for you. 9. Get your E to allow your movement speed to kick in at 50% rather than 40%. 10. Your Q again for more life steal, by now you'll be getting more ganks from other lanes + your jungler. 11. Of course get your Ult for more stun in ganks and team fights. This should get the people you are laneing against scared about easy ganks because of massive stun. 12. 4th W mainly for your team mates for increased attack speed in team fights. 13. Finish off your life steal and by now you're buff life steal so dying should be near impossible. 14. Your E just for easier chase. 15. Finish off your W for best attack speed. 16&17 E for chase. 18. To finish it out and wreck at team fights

Very easy farming with W. Your passive life steal mixed with your dagger plus your Q equals no life loss

Pros

Life steal to begin with + heal= no recall from top lane(I'm able to go until 3k in the bank)
Your Ult + Q along with your passive + attack speed and damage= massive life steal
Very high survival in team fights & ability to engage

Cons

Low mana

When in team or 2 vs. 2 fights use your jump to stun and set a focus for the rest of your team. Also use your howl to increase your and any other ad's attack speed. End game, you have enough attack speed and life steal to solo almost any player in the game with an ult to start, allowing them to get low and your E to kick in allowing for easy chase