Fiend's Mirror (Normal)
The four prize cards from the first Duel Monsters Tournament are illegal in official play for reasons similar to that of "Obelisk the Tormentor"; they are Ritual monsters that have no means of being Summoned. This is not new; it has been the situation since their release. The "Replica" mark—printed in place of the usual eight-digit passcode—on early Japanese OCG cards indicates that they are not the first release of that card. Had these four cards been the first printing of these monsters, it is possible that they could have been legal as Tribute monsters; however, since they were not, and the first release was in Ritual monster form—not normal monster—they can neither be Tribute Summoned (since they are Ritual monsters) nor Ritual Summoned (since they have no Summoning text), and are therefore unplayable.
