Receiver 15' away cuts to one side or the other. Two of them have discs. One person stands in the center facing the other 4. One player in the semicircle throws to the center person, who catches and immediately throws it to another person. While he's throwing, the other disc is thrown to him.
All throws go to the center person.
Works on quick catch and release coordination, peripheral vision. This drill can be easily sped up to challenge anyone. Feeder can work on catching and throwing with both hands. One other player with the disc stands near a sideline, 10' outside of end zone. A1 throws to B1.