Help - 144/145 cards in Play Log. Deck shows 145.

I started Hard mode and now at Chapter 4. Was fooling around to complete various stuff. Noticed 144/145 cards. But, in my card list, I have all 145 ones.

Can anyone guide me on what is going on? Could it be some kind of quest unlock (I reset them to get manuscripts) that isn't counting anymore?

Edit: It was Gilgamesh, and I cannot math at midnight apparently.