LeBlanc

Classic Misdirection

Lane harassment and consistent damage output.

Burst damage and target access

Electrocute

Hitting a champion with 3 separate attacks or abilities in 3s deals bonus adaptive damage.
Sudden Impact

Damaging basic attacks and abilities deal bonus true damage to enemy champions after using a dash, leap, blink, teleport, or when leaving stealth.
Eyeball Collection

Collect eyeballs for champion takedowns. Gain permanent AD or AP, adaptive for each eyeball plus bonus upon collection completion.
Treasure Hunter

Unique takedowns grant additional gold the first time they are collected.

Creative tools and rule bending

Biscuit Delivery

Gain a free Biscuit every 2 min, until 6 min. Consuming or selling a Biscuit permanently increases your max health and restores health.
Cosmic Insight

+18 Summoner Spell Haste
+10 Item Haste

LeBlanc's assassination playstyle synergizes perfect with the burst damage play-pattern of Electrocute, allows you to easily proc it with a [Q]->[R].

LeBlanc makes great use of Sudden Impact, gaining bonus Magic Pen and Lethality when **entering a trade/fight with [W]**.

LeBlanc is all about kills and snowballing. Eyeball Collection is a rune that further pushes your gains for every kill/assist.

LeBlanc's incredibly high base damage means that your self-sustaining harassment will be incredibly high paired with Ravenous Hunter.

Biscuit Delivery allows you to trades aggressively and often in lane thanks to your potion advantage when paired with Time Warp Tonic.

Cosmic Insight's general utility means more ability casts and damage output in teamfights.