The ldrowrevO dimension

This dimension is an alternate version of the overworld; neutral entities attack, while hostile entities don't. The entire dimension is altered, with alternating colors, etc. To enter this dimension, you must craft The alternative object that, if you jump into lava with it, will send you to that dimension. To craft the alternative object, you will need a blaze rod, a chorus fruit, and a diamond. And by jumping into the lava you will reach that dimension. The final boss will be located on a floating island. The one called Xinef shouldn't be attacked, but rather his lights should be destroyed with a bow, and once defeated, his ashes will... They will scatter across the sky, releasing the alternate core that will allow you to escape that dimension. In addition, there will be different mobs in the dimension, such as the fallen king who will attack you upon seeing you. he will release A magical tracker to reach Xinef, defender of the alternative dimension, who will also drop his sword which will do 9 damage. When you obtain Xinef's alternative core, the dimension will begin to fall.And you'll have to quickly grab the core to get out of there. Is my idea good? Please add it; I give permission for some changes.