It must have the factions plugin. The command it /f create name
The command varies from server plugin to server plugin cause some people make they're one plugins
It all depends what plugin you have but usually the command for it is /pt (anycommand) it will then assign the command to whatever you are holding in your hand
"God mode" is a command from the Bukkit plugin "essentials". If you have the correct permissions you can type /god in a multiplayer Minecraft server with that plugin enabled, and the correct permissions in your current group.
It depends on the Minecraft server and what plugin the server is using for factions, sometimes typing "/help" on a server will give you the command syntax (what is required for each command). Alternatively if you know what mod they use, Google search for the plugin/mod and find out.
There isnt a command for health boost. If you can get a plugin to do so then set it as @p healthboost 1000 (guessing thats the command)
There are single player mods that enable this as a command. But most are for multiplayer if you are searching the plugin: WorldEdit is the most chosen
Use the plugin Factions to create Warzones. You can use the command '/f claim warzone' to create one
Up Date Your Minecraft
Place the plugin into the plugin folder and restart the server.
Using World Edit, a multiplayer Bukkit plugin, you can do //thaw [radius] to melt all snow and ice in that radius.
manoise