Q.What Kind Of Disease Is This?
This has been spreading on the surface of my soil for a couple days now. I was wondering if anyone knew what it was and if I needed to do anything about it. Thanks!

Certified GKH Gardening Expert
That is one of many hard-to-identify slime molds.
Though the mold is not harmful, and is trying its best to kill of bacteria in the soil, this indicates that the soil doesn't get a chance to dry out at all. This makes the soil highly unsuitable for plant life, and perfect for bacteria and fungi.
The best treatment will be to treat with fungicides in between letting the soil dry out very, very thoroughly.
Solarization may be necessary, as well.
Here are some articles that will help:
https://www.gardeningknowhow.com/ornamental/fungus-lichen/what-is-slime-mold-slime.htm
https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm
https://www.gardeningknowhow.com/special/organic/biofungicide-information.htm
https://www.gardeningknowhow.com/garden-how-to/info/homemade-fungicide.htm