I do not know how this could happening ( maybe dragon egg magic ) But it is basically like a portal, except you place both sides a place you want to make ease of fast travel. Once placed you and only you can destroy it except if you get banned permanently. This would allow you to link up to the wastelands from the original wild or just in the same world. Not sure if I made sense or not. Edit: It is like a portal gun but with dragon eggs.
I'm pretty sure this is similar to what the dragon tomb update will already have... basically you can claim land in the wilderness using your dragon egg(s). From that claimed land, you can teleport directly to and from town. I don't think it creates a physical portal, but you will definitely be able to teleport using dragon eggs. However, I don't think the eggs will work with the Wastelands, since they'll be reset so often.
My goodness, people. Is it really that hard to understand? Maybe a picture will help. I really doubt it would be implemented (because there are already plans for the dragon tomb update), but I don't get why all anyone can say is "Wat?"