GJ i win easy game with this build tnx!

@Earth Element: Abyssal Scepter on my guide is open for 3 support only: Alistar, Leona and Fiddlestick. Such support are really often at the heart of any team fight and have some use of the AP stats (even more on Fiddle). It's a proposition for a 5 or 6 item (or earlier for Fiddle). But now, I would prefer Spirit Visage on Alistar and Banshee on Leona, so it's just a proposition depending on needs of your team (it happens have 3 AP in your team and no one had built Abyssal -_-). About letting some slot free for wards, I agree on this but only for one, because you would have 8 wards open and there is not that much spot for ward and not that much moment to ward in fight. I prefer use the money left for more consumable like Oracle and others Elixir.
About finishing a 6th item, I usually finish a 3rd or 4th item on every games. It happens to finish your stuff at 55min around (5th or 6th depending on the cost of your stuff). After this moment, the guide isn't useful because your stuff is totally contextual.

@Geelot: Thanks, it's a good advice.

@DarkGabriel90: It would be the best if I had more slot for builds and more advice to give. Anyway thank you ^^

I must vote again

The best build ever

The best build ever

The best build ever

tbh i would never ever finish a 6 item build on a support, i always leave two slots for wards, wards are a massive impact on games considering alot of deaths are because of ganks, or catching someone out of position. having good map coverage can be what determines a win from a loss.
your example of peeling for your carry is good and i think most support guides should have that in them simply because alot of people forget to protect carries during team fights and blow all of their cc in the first 5 seconds of the team fight leaving their entire team open to whatever their opponent has instore for them.
also i would not normally get to many damage items such as abyssal scepter tbh it isw lack luster on any support they will normally be sitting at the back peeling for the adc and reducing the mr of the enemy when they get close is not something to great since the person you should be peeling for is ad... sure it could be decent in some situations but in most it would be more helpful to buy other things.
there are a couple of other things but they are just some things i saw straight away :)

You should turn on C2V, Otherwise +1