This is my first build guide. Please comment and feel free to tell me how you play LeBlanc! :)
LeBlanc is GREAT. She possibly has one of the best bursts in the game. Her combo's are unbelieveable (if you know how to pull them off). That is what this build is going to be about.

Follow the skill sequence above while leveling. I will explain how to use these skills below...

Since my build requires teleport and clarity you can spam, AND I MEAN IT!

LEVEL 1: Spam or Care
At level one you want to be spamming sigil on your squishiest opponent. Depending if I am mid I usually care until level 2. If you are mid you will want to care but if you are laning with somebody you should SPAM THE SQUISHIES!

LEVEL 2: COMBO BREAKER
Sigil + Distort. = Silence + MEGA DAMAGE!
(at level 2 you have the chance to do massive damage to your opponent. Do not be afraid to spam this combo if you are mid because they will be silenced after this combo!)

Level 3: Repeat combo breaker.
Since sigil will recharge a little faster... SPAM!

Level 4: Slow that MoFo!
This one can get a little tricky since it is a skill shot.
Ethereal Chains + Sigil + Distort + Normal Attacks! + (distort out of there)
This can usually land the kill... You should be able to get about 2 normal attacks in.

Level 5: Sigil gets faster!

Level 6: Doom.
This is where LeBlanc SHINES!

Sigil + Mimic + Distort = INSANE DAMAGE!

Distort + Sigil + Mimic + Distort(to go back)

If being ganked:
Chains + Mimic (wait for them to get stunned) + distort out of there = ganked no longer

**If you are pressing a lane and do not want your opponent to run just keep sigil + distorting them. Then when they are about half health DESTROY THEM!** ;)

Sometimes I take:

Ignite (only for people who do not know how to 'make' the combo kill.) I only take this sometimes because I can tell when exactly I am able to kill somebody. Since LeBlanc has such a burst of skills I find this unnecessary.

Clairvoince- I LOVE this skill. Since it is relatively easy to Sense a gank (if you have a good enough team to call mia's) I usually do not take this spell. It is easy to get out of ganks with Distort + Mimic...

Flash- I take this only to flash in and burst. This is not really necessary since distort can act like your 'flash'.

Once you get distort + mimic something special happens as you play LeBlanc! :) You know those caster creeps... Well if you distort + mimic them... 'BOOM' they are dead! Instant 90 gold. You can get most of the other creeps as you do this as well. Just attack all of them so they are half health and do this. This will result in WAVES of creeps being destroyed.

That is the end of this build. Please Rate and Comment! Be nice... this is my first build :)