mass of 4/4s

If an effect would create one or more tokens under your control, it creates twice that many of those tokens instead. If an effect would put one or more counters on a permanent you control, it puts twice that many of those counters on that permanent instead.

Sacrifice all creatures you control, then create that many 4/4 red Hellion creature tokens.

If an effect would create one or more tokens under your control, it creates twice that many of those tokens instead.