Atris, Oracle of Half-Truths

• WOTC Official Reminder Textofficial rules
  Menace — This creature can't be blocked except by two or more creatures.

• WWizards of the Coast2020-01-24
  Official Ruling
  You choose just one target opponent to look at the top three cards of your library and put them into piles. Other players can't look, but they may attempt to offer advice without knowing what cards are there. The player who looks may also tell other players truths about those cards, or half-truths, or outright lies.
• WWizards of the Coast2020-01-24
  Official Ruling
  The opponent may split the cards into one pile of three and one pile of zero. The pile of three cards could be the face-up pile or the face-down pile. Sometimes your opponents seem very friendly, but keep in mind which god Atris serves.
• WWizards of the Coast2020-01-24
  Official Ruling
  You don't have to reveal the cards in the face-down pile if you put it into your hand.

Rulings via Scryfall