@Scrax: from my experiences with this build, the heal is quite okay. Whenever necessary, you do it all the time together with another spell. You can spam any two spells except your ulti right after another for a very very long time, while you all the time heal yourself and add mana.

Also, you get some AP from the Archangel's Staff. As I said, you can easily exchange the last two items with whatever you need. If you want to heal more (and also do more damage), just exchange them with AP. My choice is and was more aura items, since due to the natural auras I keep myself in range anyway. Until now, no mate blaimed me to heal too less. On the contrary I can say my mates only died in tight teamfight clinch or if they weren't able to avoid some damage by not being hit by every aimed spell. Everytime else failure was not due to low healing.

At the end, it's a tradeoff like always. Maybe you are more effective shielding your mates by the Aegis. Maybe you give them more heal with normal or magical lifesteal aura. Maybe you help better with lowering opponents magic resistance. Maybe you help your team more with holding out longer since you are likely targeted. If we are talking about the last two items.

Before, I definetely chose Tear of Goddess and Innverating locket, since you heal more if you always have enough money and heal yourself so you also survive. And that's not beaten by any AP on the same gold base, right?

I added Soul shroud because I like the aura and have experienced the need for some more health, since opponents focus me a lot in team fights. Whenever I fall in those, at least by Team survives and wipes the others.

Question answered? I am very open for suggestions and criticism.

The build is solid. It does what it's supposed to do; Support.

However, I can't help to wonder.. With so low AP, how much do you actually heal?