OK so I was curious, since it seemed like at least one other person attempted it, to know if there was a different outcome. I have done this on 2 black decks with success. It makes them look amazing (Black Sharpie, one card at a time). I did it first on my Shadow Masters deck:







And my Unbranded Oracle deck:





So, if you want to know what a metallic Sharpie does to a card:





I did this in the same way I did the black decks, one card at a time. The bleed through is very noticeable. I would imagine if you could color match the metallic sharpies to the deck, then it might work. But I would not do this if the color doesn't match up. Anywho, sorry for digging up an old thread. I just wanted to know. Hopefully this helps someone else looking into doing this.