what is it?
Quite simply, it's the ray of death when coming from the top down and it's salvation when it comes from the bottom up.
Ok, calm down, I explain. It is that 90% of the time, when we have a "V" (double attempt to keep going up), he showed that it will not keep going up, and in this case, we have a fall will usually be in 2 stages, falls breaking the minimum of "V", rises a little and falls again, breaking the new bottom. this is the deadly Shazan. See the blue line in chart from NCM .