The Magic Dust is just another of the many Creole/Cajun seasonings available, from Louisiana. Really good on stuff so far. Here's a picture of the ingredients, but it does have MSG, if that's a problem for you. The other container is just Season-All.
As a comparison, here's another picture comparing the MD (left), Tony Chacere's (middle), and my own blend on the right. The MD adds sugar to their's, so it is sweet forward, and uses more red pepper and paprika to get a red coloring. The Tony's is much saltier, and doesn't have quite the heat as MD (the container I have does not list ingredients, but you can taste the white pepper, and very salty). My blend is simply Morton's Season-All, garlic powder, a little onion powder, and double the amount of course-ground black pepper (and no MSG).