Echo Player Takes Out 5 Enemies with a Sneaky Bastion Ultimate
An Overwatch player used Echo's ultimate, Duplicate, to clone Bastion and then killed him to get his ultimate, which she used on all the enemies that remained.
Echo's ultimate ability allows her to copy everything about one enemy hero temporarily. She can use their abilities and looks like them, but blue. She also doesn't need to work quite as hard to get their ultimate as shown below.
This clip, posted on the Overwatch subreddit by u/jhwrd, shows them sneak behind the enemy team and use their ultimate to copy Bastion's abilities. They set up in sentry mode and quickly take out the other Bastion. This earns them Bastion's ultimate which they use to take out the four remaining enemies. They definitely earned the play of the game for that clip.
As Echo gets played more, it will be interesting to see what enemy abilities emerge as the favorites to copy. Right now it seems like tanks are a favorite because this Echo player copied Reinhardt's abilities and this one copied Orisa's.