Let's discuss fan-types. Part 3, Magic type

1. So, what is this type all about?

Magic type is a speculated type that has been initially proposed as a means of introducing magic and occult elements to Pokémon, particularly the spell casting kind seen in most JRPGs.

The primary difference between other fan types and Magic-type is that it has been reproposed after the introduction of the Fairy-type, which covers most of the expected elements of a hypothetical Magic-type, but is actually based on Japanese conception of Yosei primarily with some elements from European pagan deities and familiars. So, a Magic-type would create a supernatural, magical type that is not dependent on a childish or pagan elements.

2. Where does this name come from?

Earliest instance of Magic-type I can find is from Pokémon Factory, which is the only fan dex that has well conceptualized Magic as a type.

This idea has been largely popularized by Gymjack's image.

3.Does this type have an in-game source?

Shockingly enough, yes, largely as a subsection of Psychic.

Magic Coat, Magic Room, Magic Bounce, Magic Guard etc. are all magic related moves and abilities.

Dazzling Gleam and Mystical Fire both have Magic in their Japanese names.

4. What would be the ideas behind such a type?

My comments can be found here.

5. What would be the type interactions of such a type?

While I can't say much, this type has been conceptualized several times enough to be used by some fan game.

One thing that is necessary to mention is that such a type will likely give Ghost, Psychic and Fairy additional coverage, as they will likely be the parent types of such a type(Psychic in particular will be separated with the introduction of a Magic type).

6.What would be distribution of such a type?

Most likely it will be similar to Fairy than Psychic. That is, species themselves will be common, but the amount of possible species will be limited.

7.Future comments:

Because of ever expanding nature of Psychic-type, we can expect to see a demarcation of Psychic-type, one of which will likely be Magic-type. If this happens, one should not be surprised.