Other Commands
-creep - allows the host to turn creep spawn (like in single player) on or off during multiplayer mode. If toggled on, creeps will spawn and randomly attack any player.
-zombie - activates zombie mode
-repick - allows the host to repick a maximum epoch limit early on in the game. This command is automatically disabled as soon as 300 seconds of game time is elapsed or a player reaches the iron age, whichever comes first.
-name X - changes your name to whatever you want
-panda - allows the creation of mini panda, panda champion, and panda titan.

Single Player/Zombie mode ONLY Commands
-diff 1-15, changes the difficulty of the mobs
-increase, increases the number of spawn of enemy mobs by 1
-decrease, decreases the number of spawn of enemy mobs by 1
-lock, prevents mobs changing over time
-unlock, lets mobs get stronger over time (default setting)