The Rolling Carni is a next level technique from out of 10th Planet Jiu Jitsu. What we are beginning to see is the foundational techs of the 10th Planet system being used in new combinations and from different angles.
In the video Brent, one of the instructors at 10th Planet Hollywood, demonstrates how to do the Carni from the top position in Quarter Guard.
Brent makes a good point about Head & Arm control from the Side Mount too that will help you go to Full Mount easier so watch out for that bonus.
It is so unnorthodox that you will catch your opponent off guard. The element of surprise many times makes the difference. This is true for high level competition as well as beginning.