Welcome to my Lulu build, please note that this is a AP build
This is my first build, so please leave a comment and tell me what I can do better, then Ill be sure to take a look at it.
Pros / Cons
Can give an AP buff
Can silence enemy AP carry
Good AoE stun
Can use Help, Pix! on enemies to make them visible for a short time
Can make Cho'Gath even bigger!!!
Can be squishy
Very slow movement
You can use your Help, Pix! on enemies to make Pix follow them, when he is following them he will cast his part Glitterlance from that enemy this can be used to slow enemies pretty far away.
You can use your Whimsy on a champion like Nunu while he is using his Absolute Zero this will give him 60 AP more which will give his ultimate about 150 extra damage and secure the kills and some nice assists.
Help, Pix! is best used on an ally with high attack speed, as Pix will shot his bolts everytime the targeted ally auto attacks.