This is a mod containing some useful chat commands:
8ball: write a question as parameter and the mod will answer whether it will come true
8ball_quiet: like 8ball but not shouting it out to the whole server
choose: choses a random item from a ";" seperated list (spaces allowed)
leet: convert a text to leetspeak, first write the severity level (1-6) then the text
Feel free to request more commands in issues or in a thread here...