I don't know if anyone has done this but Heres how you do this:
Name:
Type: (Ice, Dragon, Grass, etc.)
Type2: (Optional)
Ability:
Info:
Example:
Name: Unown_N (N means Numbers)
Type: Phychic
Type2: None
Ability: Knows any move
Info: These Mysterious versions of the Unown are extremely powerful and they are only found on or moon.