That is all. : P
WAAARRRPPPSSSPPEEEEEEDDD! (Also, its beautiful. Would anyone be willing to make a screensaver out of it?)EDIT: Do it at night :)
Add a Command Block with this Command to your redstone circuit that resets your arena after a game: /kill @e[type=Arrow]This will cause any arrows left in the arena to despawn. This is useful for decreasing the lag that can accumulate between rounds due to glitched arrows that won't despawn.(requires 1.8)
X200B;https://i.redd.it/bgw81bs9k2v31.png