This is a good general support build based around auras but also with some situational options.

Maxing Living Armour first is a good way to assure that people won't die, follow this up with Leech Seed for the slow and extra damage during ganks. If you have a naturally tanky team you can instead max Leech Seed first.

Remember to always get your Leech seed (and melee attacks) off during battles and to try and melee a few enemy heroes. You need that assist gold as you won't get any assists from using LA!!