This drill allows you to work on shooting technique while making the drill competitive. The drill also forces the shooter to battle some fatigue towards the end.
I have posted some links to some other skill development drills below the video. Some of the drills are team drills and others are individual workout drills.
This is a youtube video, so please make sure that you are on a server that allows youtube access. This drill came from basketballhq.com
Press the play arrow to see the video. I hope this stimulates your thinking on how you can tweak this drill to fit your needs and skill level.
The video is among the basketball training videos for all levels of coaches, players, and parents that is offered by BasketballHQ. You can access their entire library with a pro membership. They offer a free 7 day trial for the the membership. If you are interested, you can see more at this link: Basketball HQ