Spell book

Here is your anwser for all those who wanted the spell book ability. Base it off the item "Spell Book".
In this case I will use War Stomp as the base.
____________________________________________________
A unit learns an ability

Learned ability equil to War Stomp

Remove-War Stomp
Add-"Spell Book"
____________________________________________________

You change "Spell Book" and add the spell you want in it.
**Be sure to change max. and min. spell amount
**The spells you add in you book has to be item or unit
For item spell you can have certain level. So a hero can only use that ability when he is at that level. For units you can't change the level you want.

I hope that anwsers all your spell book questions :)