You could simply combine a name for it out of nowhere, shouldn't be too hard....hm...how about...DeathBlast? DeathBeam? Anyway, I totally agree, but I think it should charge relativly fast, and be powerfull(I think Deathball is one of the most powerfull attacks, not even fully charged) and should follow as in the clip, where the charge would increase in size depending on how much power(hitting turbo or not) making the blast totally increase in size simply to make it more noticable, but still cary the same 'turbo makes an attack stronger' power base.