Hey guys,
this is my first guide. As you can see above it's a 300 ELO Lee Sin guide, I thought I'd share my experience with you so you could get as good as me. Every detail of this guide was thought through at least twice and you can only be good with Lee Sin if you follow this guide. Read this guide carefully, for it might blow your mind if unprepared.

Destroeyer

For runes, take Attack Speed Glyphs, Critical Chance Seals, Attack Speed Marks and of course Critical Chance Quintessences.
This will give you the early damage boost you need to build your Warmog's as fast as possible.
The attack speed + your passive will greatly increase your harassment on lane and will keep any nasty slows from bringing you below 0.6 AS. The critical strike chance will surprise the opposing player and let them keep distance so you can get farm even better. It also increases the chance of killing the enemy laner and the jungler(if they have one).

For masteries go 29-0-1, because you need damage everywhere and the faster Recall lets you get back even faster to escape seemingly hopeless situations. The damage on minions will make your farming even stronger with your crit chance and attack speed. The critical strikes will increase your movement speed so you dont need boots early and go full attack damage.

For items, start with a Doran's blade, it's really good because of everything it has. Boots are underpowered in Season 3. Then buy another one and boots, because your feet get cold if you don't have boots. Also you have two hands, so having two swords is more than logical. Next get the Vampiric Scepter, because it's yellow and has a skull on it. Hammers are the best items in the game, so get the phage. In mid game build whatever is the worst of the above shown items. When you're playing in High ELO (100-900) take the exact build as shown in the ELO Heaven item build. ELO Hell doesn't exist in LoL.

Start with your Q-ability because it lets you get close to the enemy so you can crit him at least twice. Then take your shield so you can get out and get back in again. Max your Q first, then take your ult at level 6, 17, and 18 because ults are useless, but hey, it's one ability more. Max your W second so you can use the combo even more often. Your E is useless, so max it last. Late game use this combo: q-q-r-w You deal massive damage and get out really fast, the enemy might get away, but that's no problem if you have exhaust. If you should get him with exhaust, W out again after you killed him with ignite so you're fabulous.

For spells take Ignite and Exhaust. Ignite is a flame, which looks really cool. Exhaust slows the enemy, lets him deal less damage and also looks cool. With these spells you are the ultimate dunking machine.

Lee Sin doesn't need teamwork.

Right click.

All in all this guide is da best in teh interwebz, because everything is awesome about it. Thank you for reading and I hope you get to ELO Heaven with this guide(100-900). Now go onwards and terrorize the randoms.

Destroeyer