DarkDivinr

So I started playing about a month ago and am loving the game. I have answered all my question through playing except one. What are the glowing green around certain cards. I can see it either when going into my collection or updating my decks but not during play Thanks in advance DarkDivinr

So I've been playing the mobile game on my phone for about a week now and I really enjoy it. I am fairly familiar with the card game (I own the physical version) but one thing I've run into on the mobile version is in the resupply cards menu. Some of the cards have an exclamation in the lower left corner and have a green glow around them and I can't find anything that tells me what that means. Can anyone explain what this means. Thanks