This command adds some very destructive new weapons to your world! Just to name two, a TNT Fountain and a Squid Bomb! Besides that these weapons are a bit laggy, you will probably have a lot of fun with them! Take a look https://www.youtube.com/watch?v=cMUaysgw5ao&index=7&list=PLyXAokTk6BI4KvBPxYQSwYAZIFqx8bFjG
You can see a command has say Have fun you can edit by command block