/sst
Set the target player for the object shower
In the game
Usage: /setshowertarget <PlayerName/PlayerID>
Sets the target player for the continuous object shower.
Once set you can type /shower to start or stop the object shower.
You can use /setshowerobject to set the object ids used for the shower.
Note: only one player can be object showered at any one time.
The shortcut for this command is: /sst
What it does
Not explained in detail yet.
Wiki