Yay, next week will have color pages!
And uh, whether the jutsu is original or not, just look at the power it has. That's one big crater... and, while I can't read very well (blurry kanji), I think Kakashi said that even with the Sharingan he can't keep up with it...
I am sorry for the death of two Akatsuki, but then again, they're the bad guys so....