Cards now have battle animations when used! Scrap still uses the Kogo's default attack animation but now all cards have their own special animations for fun and to help differentiate the attacks.
And for anyone needing cards, all Field Rangers have cards available in their shop. Field Rangers are those such as Asil who stand out in the wild to assist travelers. They'll be dressed as Kogo Rangers and share the "Field Ranger" shop.
Keep in mind though scrap hurts you, its not to be avoided! Scrap is a 3 part move, when used it attacks, hurts yourself, and charges MP. So don't be afraid to use it strategically in between other card attacks to avoid getting cornered.