In laning your objective is to attempt not to be poked out while safely farming until you have some AP under your belt. With LeBlanc you may think "Well Noxus how the **** am I supposed to poke with this champ?!?!" Well my good reader this is all you have to do: Mark with your (Q) Then (W) to them and (W) back. Just to let you know, you may think that this won't do much damage but most players underestimate LeBlanc. LeBlanc's basic combos **** on your laning enemy.

LeBlanc's combos are fairly easy to land but some of them can be completely torn to bits if a mistake is made.

The Lane Poke Combo: (Q) (W) (W) (Mark them, Dash, Detonate (Q), Return to safety)

Crush Their Dreams: (E)(Q) (W) (W) (Root Them, Mark Them, Detonate Mark, Return to safety)

Now there are many combos with LeBlanc but those are the Combos that they base off of.
P.s: If you can't finish someone off try remarking them and (RQ) or (RW) for the execute.

Now since LeBlanc is all about getting in doing damage and getting the hell out, when she gets stuck in a teamfight she will easily die. Therefore all of her counters are people who can keep her from returning to her (W) I.E: Lux, Ahri.