Diss
The Diss command uses influence in order to spread negative rumors about someone. When used people in the room will see an echo, but the rumors and effect are anonymous. So if you don't want people knowing you did it, use the command somewhere where nobody can see you.
Diss (name) character (amount) (reason)
This will spread a rumor speaking poorly of another players character because (reason), it will also deduct some influence from them based on the amount of influence spent.
Diss (name) appearance (amount) (reason)
This will spread a rumor speaking poorly of another player's appearance because (reason), it will also give them penalties to their apparent attractiveness based on the influence spent.
Diss (name) loyalty (amount) (reason)
This will spread a rumor speaking poorly of another player's loyalty because (reason), it will also deduct faction respect from them based on the influence spent.
Diss (name) roleplay (reason)
This will send a private, delayed message to someone critiquing their roleplay because (reason), it sends no message to the room, requires no influence and has no effect on the target beyond letting the know that some people feel poorly about some aspect of their roleplay.