I have the same problem since the release of LCI. The card that seems to be causing this problem is 'Command Tower', because the error disappeared when I removed that card from one of the decks that showed a non-format error. However, only 6 of my HB decks show this non-format card error, but all my HB decks use 'Command Tower', which is kinda weird.
I have the same problem since the release of LCI. The card that seems to be causing this problem is 'Command Tower', because the error disappeared when I removed that card from one of the decks that showed a non-format error. However, only 6 of my HB decks show this non-format card error, but all my HB decks use 'Command Tower', which is kinda weird.