Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
This is my AP kata build. I use it for maximum shunpo... you get around 600 hit with a single shunpo plus around 100 AD+400 AP from the Lich's bane... packs quite a punch with consecutive shunpos. I usually get good kilss and the void staff, haunting guise and sorcerers boots give quite alot mpen. Getting haunting's early gets me good stacks not too late in game.
I usually start with Doran's Shield and build up sorceres boots and haunting guise. From then on it depends on how the games going i get mejais or rylays straight up. After that i usually go either void staff for mpen, nashors tooth for cooldowns, guardians angels for survival or zhonyas ring for AP.
It is not an easy or cheap build but done correctly and knowing how to play kata gets good kills
hope you like it give me your thoughts