This requires you to build a fully powered beacon comprised of 4 levels. A 9x9 base, 7x7 level, 5x5 level, and 3x3 level of iron, gold, emerald, and/or diamond blocks topped off with a beacon at the very top in the center.
You can grab a beacon from the current tutorial world inside the town. I then spent many hours mining the blocks needed, but I'll make it even easier for those that need this.
Simply message me on Xbox Live and you can join my world to unlock this easily.