This is a SkyBlock type card. Anyway, most of this map is based on commands that allow you to create your own craft recipes that will really help you achieve your goal …
Basically, your goal is to kill the withers. You don’t start out big, just DeadBush, with seeds, with some bone meal, and with a book of credits. Use them to allow you to progress towards becoming OP enough to kill the vortex. Once you kill the vortex and capture its star, you will win the game.
Note to those who do this against the withers. It is recommended that you fight him in the bowels, as you all saw how destructive his power is … would not want to end up destroying your world with his heads.