Warped Nylium is a unique block found in the Nether biome known as the Warped Forest. It has a distinct blue-green color and is primarily used for growing mushrooms like Warped Fungus and Crimson Fungus. This block can be mined with any tool, but using a pickaxe increases the drop rate of Warped Nylium itself. It also has the ability to spread to nearby Netherrack blocks, creating a vibrant environment in the otherwise dark and hostile Nether.