That's cause they didn't use blood bending, the gif would be around 5 seconds and a death.
That's true =)
I've 2 secrets in Avatar - where was Zuko's mother and how Amon could deprive of bending with his blood bending
Zuko's mother's mystery was solved, in sequel comics. Google "Avatar: The Last Airbender – The Promise" and "Avatar: The Last Airbender – The Search". Both stories are broken into 3 parts, about 80 pages each. they were very well done, IMHO.
