Talk:Rikayu in Chains/@comment-130.88.99.222-20150615175804

Can someone kindly explain this elemental hall concept to me? I've entered it twice, but of all the chests I've gotten, none of them are cards from the panel. After I open the chests, there's a message with the panel in the background saying none of the cards are from the panel, so (something, I can't rmbr what exactly) isn't available yada yada... am I missing something here, or is this normal?