Craftable Nether Star: Extreme

This mod allows you to duplicate Nether Stars. The crafting recipe is extremely challenging and gives you a reason to grind for Nether Stars if you want to avoid fighting the Wither. This mod works especially well alongside mods that add recipes for Notch Apples, craftable Wither Skeleton Skulls, or make the Wither more difficult to defeat.
Recipes are in the gallery.
Feel free to use this in your modpack.