i chose for the full AP rune page for more damage at the start.
its also good to put a little armor runes in it for damage reduction.

just take the normal AP masterys but take also a little armor and damage reductions from minions.
improved recall saved my life several times so thats why i take it
summoners resolve is a must for the gold bonus on using smite it can help you to farm more money.
i also take summoners insight for the CD reduction on ur flash.
good hands helped me to save multiple turrets for late game.

i recommend starting whit cloth armor and 5 healt potions.
then take madreds razor for more damage on monsters
then take boots and finish wriggle's lantern for a little lifsteal in combination whit ur W.
finish boots and get giants belt for more durablity
build catalyst the protector for mana and healt regen on level up u can stay longer on lane/ jungle
finish relai's crystal scepter for a bit CC and healt
get rabadons deathcap for more damage.
then get an abyssal scepter for MR reduction and MR aslo nice because in spider form u are melee.
sell ur wriggle's lantern and take zhonya's hourglass for armor and AP and its a great counter item for fed AD carry or AP carry like Katarina.
then finish ur Rod Of Ages u can also finish it befor your zhonya's hourglass.

For jungle is smite a must
its also nice to have flash
ghost can be nice but you cant flash over walls remember that.