Mystic Redaction
Enchantment
At the beginning of your upkeep, scry 1.
Whenever you discard a card, each opponent mills two cards. (They put the top two cards of their library into their graveyard.)
Printings & Conditions (2)
Modern Horizons 2 (MH2)(Modern Horizons 2)#53Uncommon
Modern Horizons 2 (MH2)(Showcase) (Modern Horizons 2)#338Uncommon