So, once you set up this pattern, you can save it and re-use it, correct? I haven't done that yet. This would be useful for me to set up cards for DJ Mixes with embeds and links to share the block a mix is in.

I don't necessarily need a CPT right now as the previous commenter might need. I like the concept here of just adding it when you need to. But sure...having a database is also useful to filter content, etc.

Thanks for showing how this is done. I'll have to show Michael Twitty and see if he can figure out how to do this on his Afroculinaria blog.