Every Dream a Nightmare — ruling 1

In a Supervillain Rumble game, first the next player in turn order chooses a card in hand without revealing it, then each other opponent in turn order does the same. Then all the chosen cards are discarded simultaneously.

Every Dream a Nightmare : règles, fonctionnement et interactions (MTG)

Every Dream a Nightmare is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

When you set this scheme in motion, each opponent discards a card. You draw a card for each land card discarded this way.

How it works : Every Dream a Nightmare

Original English text — Wizards of the Coast / Scryfall

#1June 13, 2017· Wizards of the Coast
In a Supervillain Rumble game, first the next player in turn order chooses a card in hand without revealing it, then each other opponent in turn order does the same. Then all the chosen cards are discarded simultaneously.
No other card is named in this ruling.