"invariably" at the beginning of a sentence

[chitraaa]

In this sentence written by me, is it proper to use invariably at the beginning with a comma:

Invariably, all dystopian novels imagine human-induced environmental or biomedical crises that change human existence for good.

 

[emsr2d2]

In this sentence written by me, is it proper correct to use "invariably" at the beginning with a comma?

Invariably, all dystopian novels imagine human-induced environmental or biomedical crises that change human existence for good.

Yes.

Note my corrections to your opening question.