Hide an ability

[Googlieeyes]

Hey so i'm making an ability which uses barrage as a spell activated by a dummy and I just need to hide the icon from the barrage. Any ideas how to do this in a trigger?

 

[Bond009]

Just give the ability in a spell book and disable the spell book for that player with a simple trigger.

 

[Googlieeyes]

but the dummy is in a book when i use it. so would it mess it up to add it in a different book then add the 2nd book to the hero and disable the 2nd book?