Added OP-Sign: Generates a sign that can make you an admin. This sign contains a special code that causes it to run a command whenever someone right-clicks it. The command will always be executed with admin permissions, no matter who is clicking on it, so it can run commands like /op YourName.
Added CrashChest: Gives you a chest that can crash other players and prevent them from joining the server (they will get a crash every time they try to join). In order for this to work, you need to fill about half of someone else’s inventory with CrashChests. The point at which a player will get a crash depends on the number of inventory slots that have at least one CrashChest in them. The size of each stack doesn’t matter - it is enough to have one CrashChest in each slot.
It is also possible to place a chest in the world and fill it with CrashChests. Any player who tries to open this chest will get a crash. However, this method does not prevent them from joining the server again.
Added Cmd-Block: Generates a command block in Creative Mode without the need for admin permissions.
Added CrashItem: Modifies a nametag so that whenever you right click a mob with it, all nearby players will be kicked from the server.