The question most players ask is if the build can actually work efevtively. The awnser my dear reader is : YES!!!!. I have played 143 matches with Le Blanc and expeimented with alot of builds. This is the one i have found most deadly and have won over 80 matches with it. Feel free to leave comments and i will see to it to keep it updated by your inputs.

Buy yourself 3 health potions and boots to start with no Mana potions is needed since you have Clarity. Haras the oposing mid with DISTORTION and cast again to get away safe. Buy sorcerers boots ASAP followed by a Void Staff. When you get MIMIC cast spells in following order for MAX damage output : QRWEQ. This should deal be able to kill a 50% hp enemy early game and late game the KILL combo can take out about 2-3k hp eaily.

By now you should be building into your Rabadons Deathcap. When you get this baby your damage just snowball's like CRAZY. Try to take out isolated hero's seeing you can not do alot of damage to multiple targets. Use the KILLER COMBO (QRWEQ) to pick them of easily. When you get ganked or confronted by 2 hero's retreat with DISTORTION and MIMIC it for maximum range!!

You should now be nearing the end of you item purchases. Still only target isolated characters or get a fellow summoner to help you with multiple targets. You should now be able to do 2-4K of damage with the KILLER combo without getting any damage.

Pros :
**** LOAD of damage with correct items
Easy to escape on low health
Can kill runners easily.

Cons :
Squishy
Cant handle 2 enemy Hero's at a time.
Mana hungry early stages (But hey that's why you have clarity).