From Renegade Games Studios website:
A new challenge! The Power Rangers will need to intensify their attacks to vanquish these evil villains! This lineup of fan-favorite monsters and bosses includes Commander Crayfish, Polluticorn, Rito Revolto, and Master Vile, each with their own large-scale miniature, deployment card, and enemy deck.
Shipping and returns
We suggest a Power Rangers: Heroes of the Grid Expansion Subscription if you would like to lock down future Power Rangers Expansions automatically!
This is not a standalone product. It requires a copy of the Power Rangers: Heroes of the Grid to play.