i was fooling around with nami as a damage dealer and notice shes actually pretty strong. so after testing a few times i came up with this build. feel free to leave suggestions. i will be posting a youtube video on this soon. check http://www.youtube.com/user/firelord41

this nami is for annihilating the enemy in the beginning of the game. namis base health is very low but when used correctly her other stats are very dangerous around lvl 3. play defensive till lvl 3 and then offensive by catching ur opponents off-guard with a few basic followed by prison to stop them retreating, use e to damage them while they are stuck. use w somewhere there and a full hp champion should be pretty much dead.

et the best of both worlds by using hyprid penetration quints and marks. some extra ap in the beginning with ap glyphs and some protection with armor seals.

you are a damage dealer and you use both ad and ap so go all out on offense masteries. max all ap masteries first and fill in the damge once by preference.

start with dorans ring to increase your mana regen. bacause you start with the heal skill hp pots arent neccessary. instead http://www.mobafire.com/images/item/mana-potion.gif you can also start with http://www.mobafire.com/images/item/sight-ward.gif

early game
follow with stinger for speed and damage then follow with sheen for ap and mana. get boots for some speed and finish nashors tooth to increase your basic attack damage. get some sorcerors boot for magic penetration and finish lichbane for some extra damage.

mid-end
in mid game you start getting into teamfights so get a runaans huricane so you can spread the love of the sea to all your enemies. get a deathcap for some extra damage to your spells and attacks. they get less you get more so why not get an abyssal scepter the little magic resist might save you life and the extra damage will come in handy. you can also get a zhonyas hourglass to protect yourself from the dangers that roam the rift.

start with w for heal and damage follow with aqua prison to help stop enemies so you can either kill them or get away. get tidecaller at lvl 3 and you can start dealing damage. with a good combination of the skills you should be able to defeat any other lvl 3 champion. max tidecaller first because the whole strategy builds upon that. get the ult whenever its available. the rest of the points are devided according to what you prefer.