probably, but do remember, this is only against rainbow
this is just to show that in a "rushing" match (rainbow is known the be a rush FG), an unupped, classic version of shrieker rush can take out more than half of rainbow's hp
against other gods, i don't think this will work, just because other gods focus on delaying rushes, rather than rushing.
you can try shrieker rush against FG, I doubt you can get even one win