first trip back get a potion ( the red kind)
Seacond trip get your deathcap this will give you ap
Next get your zohnyas
Get another deahtcap
and another deathcap
Now you want to ask yourself does my team need more damage or tankynes
If you need more damage get a deathcap, if you need tankines get a Zhonyas
and dont forget your Hunters machete for killing stealling your junglers blue buff easier

Start with 20 health potion, this will give enough sustian to survie in lane until your ult is in level.

try to focus on not pushing your lane and ks your botlane( DAT BOTLANE MOOONNNNNEEEYYYY!)

COUNTERS
You will wournable to any enemy that deal damage, there will AP LIZARD WIZARD PWWWNN victor in lane

RUNES
Get xp runes, to get that ult faster.


MASTERIES
I like to go 1/ 14 /3

AP MID WIZARD LIZARDs ult have an amazing scalling with ap, this will be your main damage output.

Hes ult will deal insane aoe damage in gruop fights. There ap renekton = insta win

Thats my guide for ap renekton ( recomended skill level 200-250 elo)

listen to this while playing for insta win http://www.youtube.com/watch?v=kZwhNFOn4ik

With the new aoe meta, ap jungle renkton is now viable, IF you consider going ap renekton in the jungle start 5 mana pots + an bead + a ward.

Go 1/33/7 in mastreies and consider bringing hybrid pen or health per level runes.

Sneaky second edit: Do not mute your allies, then will give you alot off helpfull tips about uninstalling league and suicde.

Sneaky 54th edit: Cow a really pigs Play Video