theire might be an option for you, witch i use to give abilities more than they usualy have.
You should try involving triggers that work on abilities, it's not very hard to do but you will first need to test out a bit.
(If you are thinking what is this guy talking about please pm and i will give you a map witch concludes these features, and than you can have a look at the triggers and you will see how to do these things.)
Good Luck with it!