To make a mob farm in Minecraft that automatically spawns and kills enemies, you'll need stone, trapdoors, chests, hoppers, slabs, and water.

Use XP Boosters via the bar above the Challenges box that is displayed in the top-right of the Training Grounds, Featured, ...

Once you've made a map in "Minecraft," you can craft banners to mark off special points in the world.

It took forever, but the results were worth it. Watch as I grind my way to the most overpowered armor Minecraft has ever seen ...