IMO it's original, but definitley less effective than normal grabbows.
Pass it to Rainbow decks section (you must press the Report to moderator button in the main post and wait some minutes until an admin moves it), and please take out that Mutation for a Steal or anything else you want.
I like the mutation: occasionally for one of the frogs, sometimes for a strong enemy creature.
When it comes to adding steal, it would take way to much darkness, or do you imply that the stilettos and lycan should go out as well?
I find myself lost, please explain.
Edit:
Another question that I just thought about:
Might it be that this is more of a controlbow than a speedbow?