Adds fire armor made for traversing the nether. (Speed, jump and fire immunity.) it has the defense of fire armor.
Also adds fire spirits, a melee flying mob that spawns in the nether and the new biome.
Adds a new extremely rare biome, the nether reject, seen in the icon. which spawns caves, zoglins, zombie piglins, wither skeletons and fire spirits. along with bone fossils which are really common.

