Additional information on this offer can be found
here.
Thank you for your Amazon.com graphic novel purchase. You are qualified to select a FREE digital graphic novel from a selection of 75 popular Marvel titles, including "Civil War," "Amazing Spider-Man," "X-Men: Days of Future Past," and more on Kindle.
You can view the selection of eligible graphic novels here:
https://www.amazon.com/comicspromo
The promotional credit must be used by October 22, 2017. This offer is subject to Terms and Conditions.
Thanks again for shopping with us.
Amazon.com