I collect some cards too. Not really because of the worth but rather because I liked them and might use them in a themed routine one day. I mostly choose cards that seem good for flourishes since most cardmagic is done with regular cards anyways. So borderless cards all the way:)
Marked decks are very cool to have too so I have some of them too.
Just to let you know, I wouldn't post that many articles in a short time. I cannot upvote that much articles in a day.:)
I like magic on steemit so keep it up!