Sometimes, when I discard cards as damage, the game doesn't count them correctly. For example, I needed to discard 4 cards. I discarded Arcane Armor and 2 other cards, then hit the blue arrow(next phase). Then the game makes me discard one more card, though I already went through the damage phase. If I hit the cross(cancel) it gives me my cards back, but not Arcane Armor, and still makes me discard 4 cards.