deskmonster-blog asked: OK! This has bothered me for like the past 10 years now. Please help me sleep at night! So, on the back side of every single magic card right on the "STER" of "Deckmaster" there is some blue/purple line that looks like somebody accidentally wrote on the original print of Magic cards and it was just irreversible. What is it really!?

Believe or not, it’s an accidental pen mark. It didn’t get caught in time and now it’s immortalized.