Elderfang Disciple

• WWizards of the Coast2021-02-05
  Official Ruling
  As the triggered ability resolves, first the next opponent in turn order (or, if it's an opponent's turn, the opponent whose turn it is) chooses a card in hand and sets it aside without revealing it. Then each other opponent in turn order does the same. Finally, all chosen cards are revealed and discarded at the same time.

Rulings via Scryfall