"Brightwing is a ranged support Hero with strong global presence. She is capable of continually healing nearby allies, due to her Soothing Mist Icon Soothing Mist trait. Her ability to teleport to an allied Hero across the entire map makes Brightwing a very mobile Hero that fits into a large variety of team compositions." - IcyVeins

Standard Brightwingbuild comes with all of the tools needed to allow oneself to be a rather decent solo support. The timing of Manic Pixie at 4 paired with Bouncy Dust at 16 allows Brightwing to have crazy healing output numbers while using very limited mana.

The ultimate choice of Emerald Wind provides a passive 8% healing increase to Brightwing's trait, which in terms gives a straight extra 8% healing at levels 10 and 20.

Further more, cleanse and shield dust provide one with the tools to keep team mates alive a bit longer in skirmishes, especially against teams that are ability heavy.