Essentially, this item can be obtained by defeating the Ender Dragon in the End Dimension ... In the game when lightning strikes, a “Skeleton Horse Trap” appears/spawns.

The Ender Dragon is said to be the ultimate boss within the Minecraft game, marking a grand challenge in the “The End” ...

which is as powerful as an Ender Dragon, if not more. Since the Wither boss mob itself requires three rare wither skeleton heads, the nether star it drops is considered even rarer. The enchanted ...