*note: i was having trouble posting the photos so I just put the links
So basically fect posted this link on blockland glass:
https://prnt.sc/i0w8afI didnt know whether it was an actual "lag machine" or not, so I decided to download it to see what it was, and this is what was inside it:
https://prnt.sc/i0wafoBasically there was instructions on how to lag servers, and it contained a save, which the image showed to be this:
https://prnt.sc/i0wbzsLooks like a spammy build that can be duplicated to lag the server or something. I recommend banning this guy from your servers.