Can be depicted as a Flame or Magma, and can be any color of Fire!
Can be depicted as Liquid Water or Ice, and can be any color!
Can be depicted as Greenery or Minerals. Gemstones, Mushrooms, and Fruit also work!
Can be depicted as Clouds or Cyclones! Clouds can also have a "lining"!
Can be depicted as any source of light (Sun, Moon, Star, Lightbulb, etc)
Can be depicted as any shadowy entity!