Hanzo is an interesting character in Overwatch. He's a sniper, but he fills a different niche from the more traditional sniper. To compliment his bow-driven gameplay, one of his abilities is Scatter Arrow - an arrow that explodes on impact to a bunch of smaller arrows. This is a powerful ability, and used right it can 1-shot many of the lower health characters (I know from being on the receiving end).
The problem I have with Scatter Arrow is that I seem to be aiming it wrong. I'm just aiming it at bodies, but I've done very disappointing damage with it so far. It also has a long enough cooldown that I'm not sure when I should be trying to use it. How am I supposed to use this ability to earn kills?