Build made by me when playing hard support with my friend who plays antimage. This build offers a hard support with strong heal and shield. Very aggressive and allows for good defence on your players. Especially the carry. The purge is valiable to anyone.
You will have mana problems. You must be wise about what you are doing. This is hard support where you get the least farm out of everyone and ward and protect your carry as much as you can.
This is a basic build. Position yourself well.