For your skills your going to want to start with your Vorpal Blade. Its your main damage out put and it heals you. For the healing benifit of your Vorpal Blade, use it on a minion with high hp. You get more hp if it dosent kill it. Some will say to use it on a minion that it will kill because it heals you instantly, while hitting a target with its mark gives you hp over time. I do not recommend this unless you are really low on hp. For champions just hit whoever you want with it. Next get Feint. Some people will say get your Shadow dash, but when you go in with you shadow dace you will want a sheild. Next get Shadow Dash. Use it to close the gap between you and an enemy, to get awaay, to help an ally get away or just to deal damage. Level your ulti at 6, 11, and 16. Follow the rest as shown above.