Among other neat tricks, the propulsion wings are powered by an old drill:

She documented the building process on Facebook, where she explained that she made it all herself, pretty much from scratch. “I made everything myself, from start to the end (sewing, crafting, electronics, programming, wiring, patterning, designing the drill propeller and shooting rockets, painting, music mixing, props etc),” she wrote.

It all culminated in a cool performance at EuroCosplay, which she won:

A few months ago, a cosplayer named Kiilys put together a cosplay of Pharah’s default skin with moving wings. Perhaps one day, cosplayers will unlock every Pharah skin, and then the longing in my— I mean, their heart will be satisfied.