Minecraft wiki entry for Advancement_guide, associated text: To get this advancement, you must get the dragon egg into your inventory. This is achievable after defeating the ender dragon. However, when you punch the dragon egg, it will only teleport. The easiest way for the dragon egg to drop as an item is to place a piston facing the dragon egg, with a lever behind it. Flip the lever to push the piston, which will make the dragon egg drop as an item. Alternatively, you may bring a torch (or just take one of the torches on the exit portal), dig one block under the block the dragon egg is sitting on, place the torch under, and break the block. The dragon egg will fall on the torch, then drop as an item. Of course, any non-full block will work in place of the torch (such as a Fencepost, Bottom-Half Slab, or Pressure Plate). However, the usage of torches is suggested, as they are cheap and easy to obtain.