Blitz2, Swdtech2, Morph2, etc...

1)This is how I'd go about it...
-This is a crazy theory and probably comletely and utterly wrong, but you have to overwrite some useless spells and add animations based on existing ones.
-Then you need to overwrite another command you no longer use
-you will probably need to go to the address of the original command and copy and
paste it over the new commands hex code GIVEN THEY ARE THE SAME BIT
LENGTH
-now the hard part, for the second sword tech (limit) you will need to point it to the new spells
-Now if you want to get fancy and have two different people learning skills you will need to duplicate the original code and place it in an empty space then have it point to C9 0?(? Being the number of the character slot) Instead of C9 02

This is a wild guess and I have no clue how to execute this and it will probably ruin your rom so have backups