Why can I no longer access treasure cards during battle? It keeps saying I must "discard" first, but no matter how many I discard, it just keeps say I must discard and never gives me a treasure card. I recently bought a bigger "card pack" (not sure how to describe that better). If someone could tell me what needs to be done step by step , I'd appreciate it!
It sounds like you don't have any treasure cards placed in your deck. Go to your Spell Deck, click on the Treasure Card tab to place them in your deck.