Lee Sin is a very good AD carry, easy to get the hang of and can deal alot of damage and at a good rate not only that but he is tanky and with life steal wich makes him great and with all the armor pen he is basically a tanks worst nightmare. Not only that but I find him really fun to play.

Now on the skill sequence. If you are getting focused down during the laning phase you should probably spec into Safeguard for the life steal/shield/Get away easily effect. But if you are up against two squishies and you doing ok max out Sonic Wave and harass as much as possible. Only pick up tempest for the slow effect, it doesnt hit hard enough to max out first but it is situational. If you are with a very heavy AD champion and he can just smash down enemies while you keep them slowed thats fine but I recomend only picking it up once or twice then going on with your build.

Summoner spells are pretty simple, you can go with anything you want but I go with flash for your ulti so you can kick some one out of tuurret range or start a team fight by Sonic waving a enemy then flashing behind them and use your ulti then resonating strike to them. Or you could go with ghost. But I always recommend going with exhaust becuase of the talent and it helps out alot with using your abilities by keeping them slowed witch makes it easier to skill shot.

Im not to good with runes so forgive me if I did something wrong but I think it works fine.

Pros: AD, Easy to play/get a hang of, Very good survivability, A great 1v1 champion.

Cons: Lacking energy at some times, A hard skill rotation.

If there is anything you would like to suggest about this build or what changes you would make please comment, Lee Sin is a new champion so I am still testing out builds also this is my first guide so sorry for any mistakes.