Minecraft-SkyBlock-Mycelium?

I completed a challenge in SkyBlock and received one mycelium block. I know if you place it in dirt that it spreads, but what's the use for a mycelium area? What should i do with one mycelium block.

Here's a quick summary of what Mycelium can and can't do:

Like grass, Mycelium yields a dirt block when harvested. The Silk Touch enchantment can be used to acquire Mycelium blocks.
Mushrooms spread faster on Mycelium than on other blocks.
Mushrooms can also remain on Mycelium blocks even in high light levels, unlike other blocks that generally despawn Mushrooms during block updates in high light.
Huge Mushrooms can grow on Mycelium (but can also grow on dirt and grass).
Mycelium can't be tilled with a hoe to make farmland, and saplings and flowers can't be planted in it.
Hostile mobs can't spawn in Mushroom Island Biomes, where natural Mycelium is exclusively found. Mycelium itself does not suppress hostile mobs, and they will spawn on Mycelium placed in Creative Mode or transplanted via the Silk Touch enchantment.
Mycelium does not cause the spawning of Mooshrooms, which require an actual Mushroom Island Biome to spawn.

If you want some more details, check this site:
http://minecraft.gamepedia.com/...m/Mycelium

Happy Gaming!