At the start of the Damage Step, if this card attacks an opponent's monster: You can place that opponent's monster in a zone this card points to and take control of it, but send it to the GY during the End Phase of the next turn
Think of Dark Law, Vanitys/Majestys Fiend and other foodgate type monsters
You will have enough resources to add to an extra deck, for example, to support this boss monster because UCT only requires a small number of cards to summon
Fortunately, with the help of fellow inmate Alex, Yusei manages to turn the warden's cheating against him and win the duel
You can Tribute 1 other "Dream Mirror" monster
You know, typical old school Yu-Gi-Oh stuff