Copy Payoff

Cards that scale, trigger, or remove restrictions when you control multiples of the same name. Biovisionary wins the game if you control four creatures named Biovisionary; Mechanized Production wins if you control eight artifacts sharing a name; Mirror Box and Sakashima of a Thousand Faces both turn off the legend rule so duplicates can stick around. Distinct from copy.creature_copy, copy.permanent_copy, and copy.token_copy, which produce the duplicates themselves; this side rewards having them on the battlefield.