Just a little bit of some background information about me. I am a diamond player (currently diamond 2) my in game name is "u sleepy" and if you want to check out my op.gg please feel free to if you want. Last season i finished somewhere in gold without too many games and during preseason i hit platinum for the first time. This was a big deal for me because I've played the game for a very long time (over 8 years) and started when I was in 6th grade so I mainly just played normals at the time and was not actively learning much about the game. When i hit gold i remember seeing all the gold border and being envious of them, but i wanted more, so i went for platinum in the preseason for season 9, then shortly after season 9 started i hit diamond 4 and now I am currently diamond 2 with a 53% winrate and will hopefully be climbing to at least diamond 1 before the season ends or hopefully masters+ if i keep up at the rate I'm going. I've learned a lot in the past season so thats why I started making these guides, to help people with the knowledge that I have gained. I hope you enjoy this guide and if it helps or you have any questions/comments please let me know.

PROS
Extremely strong early game
Good at smite contesting with second Q + Smite
High mobility abilities
Good cc with ultimate
Can save people from dying from ignites with W shield

CONS
Falls off late game
Needs to auto attack for energy regneration
Small energy pool
Ultimate ability can ruin a fight if used incorrectly

As said previously Lee is a strong early game jungler so this is one of the most important parts of the game for him. You can look at which lanes you want to gank but typically i start bot leash, then go to gromp to second buff, hit level 3 then look for a gank top lane, mid lane, or look to invade/get vision in the enemy jungle. After this you want to look for getting the scuttles, back, get tiamat and look to pressure bot/mid lane for dragon pressure.

Lee sin can still be really strong and impactful mid game with correct itemization (read notes in the item sections). You will want to be prioritizing dragon and rift and to continue applying pressure to the enemy jungle and lanes. Try not to stray too far away from your team at this stage of the game as these fights can be crucial to the conditions of the game. You will want to try and close the game out on lee sin before late game because that is when he starts to fall off, but you can still make impactful plays off of your team and you should be ablet to secure objectives with the Q smite combo.

Late game you should have some decent diving capabilities with proper itemization so if you play around your team correctly the fights shouldn't be too bad for you. For teamfighting you will typically look for getting a kick onto one of their front liners to get them away from your carries once they engage and try to knock them into more people causing collateral damage and cc. With your second Q ability you should be able to secure barons pretty easily so you should be close to closing the game out by this time anyway. Additionally, if you played early game correctly you should have more dragons than the enemy team and be close to getting dragon soul which can be crucial to winning a game. If you have dragon soul, all you need to close out the game is a siege with baron and you will be able to close it out.