Tarot Cards. Are they bad?

I'm interested in Tarot cards. Not for divination or card games (well, maybe cards games in the future) but just to look at them. I like the pictures from the rider-Waite deck. I'm a Christian (Roman Catholic to be specific) and I'm not very religious, but I don't want to mingle with occult things. Are Tarot cards bad in some way? Are they against Christianity?