The spice that allows a fetus to tap into the consciousness of all its ancestors and communicate with its mother while in the womb.

> The spice allows creatures to fold spacetime...

Doesn't seems so fantastical now, does it?

I dunno, "tapping into consciousness of all its ancestors" could be a metaphor for a form of DNA memory.

Folding spacetime requires incredible amounts of energy. I still think that's the bigger deal.

>Folding spacetime requires incredible amounts of energy

That's unclear. It could easily release incredible amounts of energy, but require very little.