i'll make it short, so first 2 pictures are 2 different slots in which i put the same cards to make a one to one comparasion, the 3rd picture is the error i get when i try to play with the "cursed deck" as it named in the picture, and the last one is me being able to play the same deck but in another slot, i have almost 20 deck slots and i've found 2 with the same issue.
#Deck Slot bug
fleet veldt
wild steeple
that's very interesting 🤔 could possibly be related to this issue - https://discord.com/channels/255388470762143745/1272910724955508747
one fix for this is to change your master's skin (then change it back to whatever), could you try that?