Board Thread:Question and Answer/@comment-5.65.23.231-20150727171158

I mostly wonder this because I've maxed the number I'm counting and want to use a few to upgrade, but some of the HNs I either want to sell or upgrade onto my higher SRs just have one of the Arcana symbols on them and are unselectable. I'm still quite new to regularly playing this so I wondered:

How does one actually get rid of and/or use these? How do you select them? it's the HN etc card but has one or more arcana symbols on. I'm probably asking a really obvious one! sorry! 