I'm not sure what happened, but after beating Ghart in Strip Lucky when he is at the axe range I can no longer battle him in the tavern. I think I also got two cards from him, his 1 star version and his 4 star. He was level 100 in the tavern and I want to get that card OwO
EDIT: Are we able to get all the Dark Knight cards? I only have the Pink eyed one.