Ok, sweet...  its open... 
My Guess is ....   THE WHOLE YuGioh TCG DATABASE
Did I win???  hahahahhaha
hmmm  .. looking at Clue#2 ... it may be something that PANIC used in his duels....  
unfortunately i dont remember them... lol....
hmm we are looking at something DARK, and something panic... 
Castle of Dark Illusions