Are you interested in hosting a vanilla Minecraft server?
Are you afraid that someone will destroy your spawn because you don't use plugins?
Are you afraid of people camping out at spawn and killing new players?
Are you afraid mobs will attack new players?

If you answered yes to any of the above, check out this map. Through a single, simple, clean, and efficient clock circuit, you can prevent players from destroying your spawn, eliminate spawn camping, and remove mobs from the vincinity! Note that this may cause some slight lag, but if you have a good host, then any lag will be minimal. 100% foolproof and moddable as long as directions are followed!