You lead with Ninjask? o.o
There are much better leads, I personally don't like Ninjask because of Mamoswine and Weavile and Taunt leaders (Azelf, Houndoom etc).
I use Ambipom (Fake Out, Double Hit, Payback and U-turn @ Silk Scarf). It has always worked for me and it's very efficient. (EVs: 4 HP, 252 Speed, 252 Attack and Jolly Nature)
If you want, you can use it. :3