Server Crash Device

There is a device that can be built in survival mode that can crash the server it is built on. I am sending this privately to minimize players recreating this. It is reproduceable, and works on completely vanilla servers (no plugins, no mods, no singleplayer). (You might need to download the video, and I am very sorry that the quality is poor)

Update:
Video can be found here: https://youtu.be/B7A8qhT9XN8