Extra mark during arena deckbuilding?

[Acsabi44]

I made an arena deck with 2 marks of death in it. I played a test game and I went back to tweak it. However I noticed that there is an extra mark in my library now.
I added it to see what happens and it went into the deck allright so my deck now contains 3 marks of death when I clearly have only 2..


This is my current arena deck



And this is my collection of marks.

[Leodip]

I made an arena deck with 2 marks of death in it. I played a test game and I went back to tweak it. However I noticed that there is an extra mark in my library now.
I added it to see what happens and it went into the deck allright so my deck now contains 3 marks of death when I clearly have only 2..


This is my current arena deck



And this is my collection of marks.

You probably closed that window so we cannot check back anymore, but probably it was one of the usual visual glitches in which a card turns into another one. It happened to me a lot to have something like amethyst pillar, amethyst pillar, antimatter, ametyhst pillar because one of the antimatter became an amethyst pillar. However, that's only visual and should properly work.

[Calindu]

No, it's not a graphical bug, I think it works with every single card(forgot if it works with upped too, but 100% sure that it works with unupped), that's how I made my alt deck in the past to go from 2 SoSac to 3 SoSac.

[killsdazombies]

Whichever card is touching the required cards is increased by one if I recall correctly. It won't effect anything other then the visual glitch.