It helps them notice warning signs like odd logos, poor print quality, or incorrect card backs
It remains goaded until the start of your next turn
Look out for edge feathering or fraying This often happens during factory cutting and is especially common in English prints
Not only that, most if not all of your arsenal get stronger effects if Selene is face-up on the field
The three formats are Standard, which comprises sets released (roughly) within the past few years, Expanded, which incorporates all sets going back to the Black & White Base Set, released back in 2011, and then Unlimited, which lets players play with any card in the game
Upon discovering that these cards were erroneously printed, WotC destroyed many of the examples