Nightbot variables aren’t resolved properly if pulled in a url fetch. Edit the Pastebin file at https://pastebin.com/raw/3WQLD50Z and replace $(user) with ~U and replace $(touser) with ~T
Then copy and paste the following command response:
$(user) fought $(touser) and $(eval a=[$(urlfetch json https://pastebin.com/raw/3WQLD50Z)];a[Math.floor(Math.random()*a.length)].replace(/~U/g,`$(user)`).replace(/~T/g,decodeURIComponent(`$(querystring $(touser))`)))