wailord v pokemon card Amazon.com: Pokemon - Wailord From the XY Primal Clash set Wailord - 041/159 - SV09:

What is the Rarest Trading Card in History

This is the extent of what we know about the card for certain

Finally, Spider-Man's powers are based on an animal, and the comics have shown that there is a certain destiny to his connection to both spiders and the Spider-Man universe, which is all core green. In addition to the Scene Box, the set will have the usual Play Boosters, Collector Boosters, Bundles, and Prerelease Packs, all of which can also be seen in the gallery above with more details

This synergizes with her ability that mills you four cards when she is cast, providing more artifacts to dig out of the graveyard