Hey, my name is s0pht im a streamer on twitch and i managed to reach diamond 4 in season 7 with only playing AD LeBlanc top. This guide was created to show you how it works out. Before you start playing AD LeBlanc in ranked try it on normal games, because its a bit weird to work with autoattacks on an AP assasin champion :)

If you play against kitable melee champs without a gapcloser start with Dorans Blade so you can pusnish them pre 6 and try to kill them with your ignite. Starting with chain spell is important to deny him from taking creeps for free. Put chain on your opponent and autoattack him. If you play against champs who can easily outtrade you like irelia etc. buy dorans shield, this makes your lane waaaaay easier. Same for range champs. Rush Statikks Shiv for waveclear, roam and get ahead. Play around your jungler, tell him to counterjungle when you are in a good position on lane. On 5vs5 teamfights you can choose between kiting tanks like an ADC or playing an assasin style: Jump over walls, auto attack the enemy adc 2-3 times and he should have 1/3 of his life left. This gives your team the opportunity to engage and win the fight 5vs4. This item build is very expensive, so dont expect to be fullbuild every game. Use your 100% crit powerspike wisely. Have fun with AD LeBlanc :D

Pros:

free farming
escape with your w
nearly ungankable
outtrading nearly every toplaner
strong roaming potential
cc with chain

Cons:

weak against champions with gapcloser
No range advantage against range champs
If you fall behind its hard to come back
expensive itembuild

Ignite

VS

Teleport

Ignite is a targeted summoner spell that deals true damage over a duration, applies Grievous Wounds icon Grievous Wounds on the target, and revealing them for the duration. It gives you more pressure on lane and a catch potential on enemy jungler level 2 at his red buff(if u start botside). Lane will be push in all the time so there are many gank oportunities on midlane or contesting rift scuttler.

Teleport should only be taken when you are facing a difficult matchup. In case the enemy midlane is going all in at level 2 and you dont want to stay on lane with 30% life, port back and teleport to lane. Early game its not necessary to have teleport, you wont use it for teleport ganks on botlane. With Teleport try to splitpush if your team falls behind, so the enemy team needs to concentrate on your splitting. Overall Ignite is the better choice.

-OR-

Berserker's Greaves > Attack speed Most matchups should be easy for AD LeBlanc top, so its better to buy Berserker's Greaves for kiting. Ninja Tabi > Armor You should buy Ninja Tabis if the enemy team has only ad champs and if you are not able to pressure enemy toplaner especially champions like Irelia who can easily outtrade you.

Mirror Image When LeBlanc drops below 40% health, she becomes invisible for 1 second and creates a Mirror Image that deals no damage and lasts for up to 8 seconds.

Mirror Image has a 1 minute cooldown. Very useful passive, it completly mind****s enemies when the mirror image moves away and the real LeBlanc is staying on the same spot.(Mirror image movable with CRTL+rightclick)
Sigil of Malice LeBlanc projects a sigil, dealing damage and marking the target for 3.5 seconds. Damaging the marked target with an ability detonates the sigil, dealing additional damage. Very important spell for bullying on lane!
Distortion LeBlanc dashes to a location, dealing damage to enemies near her destination. For the next 4 seconds, activate Distortion again to return LeBlanc to her starting location. The Q W combo deals a lot of damage early game, even against tanks.
Ethereal Chains LeBlanc launches a chain that shackles the first enemy hit. If the target remains shackled for 1.5 seconds, LeBlanc roots them and deals additional damage. The only cc spell on LeBlanc, try to double chain in combination with r for longer root duration.
Mimic LeBlanc casts a mimicked version of one of her basic spells. This spell is a bit tricky, it will take long time until you learn every combination of spells.