Good, but disabled worlds should have an option to make it a whitelist, because I only have one hub world, and will have to update the config whenever a new world is made. Also, would be great if you could specify regions to give the sword, because I only want to give it to players that enter the PVP zone

I have a request, and I couldn't find anywhere else to put this so I'll just leave it in here:

Could you add the ability to disable specific messages sent by this plugin? (E.g. "PvP enabling in x second(s)." <-- this can get very annoying, and setting the text to empty sends a blank message rather than none at all)

~OR~

The ability to make the messages send in the actionbar rather than as messages?

Anyways, my review:
This plugin isn't the most customizable or best lobby PvP plugin out there, but it IS very simple and lightweight compared to the alternatives. It's barebones, thats what makes it great, it's perfect if you don't want to deal with all the work with setting up a custom lobby PvP :D