Most of the time I go with Flash and Exhaust. I pick Flash to be able to make both agressive and defensive things with it. I pick Exhaust to help my ADC in lane and in lategame. It helps him/her get kills and survive in lane, and it does the same thing in late game.

Start Items:
This is what I start with on Nami. Most of the time in pre S4 supports start with a gold income item. I choose Ancient Coin because I often play with ADCs that farm well. This means tons of gold for me :D

I start with the Sweeping Lens to be able to clear wards.


First Back:
For my first back, I will probably buy Nomad's Medallion for more gold income. I also buy some Stealth Ward's or a Sightstone depending on how much I can afford.


The Core Items:
My core is based on Nomad's Medallion for the gold income. I get a Sightstone for the wards and because of the ward cap, you wont need to buy actual Stealth Ward's. There is no need to buy Vision Ward's, since you have a Greater Lens to remove wards.

I get a Chalice of Harmony so I can sustain my mana while following my ADC.


Important Items:
I see these items as important items on most of the support. I get Mobility Boots to be able to run around and ward fast and safe. I do not think Ionian Boots of Lucidity is needed, because i got 30% CDR from items and a bit from my Masteries.

I either go Locket of the Iron Solari or Mikael's Blessing first. This depends on the enemy team, If they CC my ADC a lot or just do damage to him/her. After I finished build one of them I build the other one.

Now I would probably get Talisman of Ascension. This because I want the movement speed active from it. I also want the CDR to be able to CC more often. And the gold income from it supply me with plenty of gold.

The upgrade of the Sightstone is not a very important item to get early on because there is the ward cap. But after I'm finished building the other items, i will get it.


Full Items:
This is my usual full build. I often get Frozen Heart to get tankier myself, get more mana and to make a big AS reduce on their ADC. I feel that this is very important.

With this build you will get a good amount of gold. If the game is going good, I'm often fullbuild after 30 minutes.

When I'm fullbuild I buy Elixir of Brilliance and Elixir of Fortitude as you normally do when you get fullbuild. The Elixir of Brilliance works realy well with Nami because it gives me CDR so I get the 40% cap and it gives AP that will increase my damage and healing.

I max the Ebb and Flow for more healing and damage. After that I max Tidecaller's Blessing for more dmg by my ADC, and for more potential too kite. The Aqua Prison is maxed last because it's mostly a spell for CC. I get Tidal Wave at lvl 6, 11 and 16 as normal.

I get the CDR from the Offense, I also get the mastery too increase my allies dmg to targets I hit which often is the hole enemy team if I placed a good Tidal Wave. I get some standard points in Defense. From the Utility I get the extra gold income, the extra XP and some mana regen.

I get gold income Quints, for more gold ofc. I get both armor Marks and Seals. I get magic resist Glyphs