Wizened Snitches | Magic: The Gathering
Formats Wizened Snitches is Legal in
Official Oracle Text for Wizened Snitches
Players play with the top card of their libraries revealed.
—Sirislav, Dimir spy
Official Rulings for Wizened Snitches
4/15/2013 : If the top card of your library changes while you're casting a spell or activating an ability, the new top card won't be revealed until you finish casting that spell or activating that ability.
4/15/2013 : When playing with the top card of your library revealed, if an effect tells you to draw several cards, reveal each one before you draw it.