Questions on making racial abilities

[Soaryne]

I trying make some special racial abilities for a custom race idea. 

 

I want to know how do I change the claws ability so it treats unarmed as if it was a bound weapon.

 

How do I make an unarmed power attack abilities that will cast a range spell that uses both magicka when is does the power attack but will not do the range spell if it doesn't have the magicka for it.