When Miasmic Mummy’s triggered ability resolves, first the player whose turn it is chooses a card to discard, then each other player in turn order chooses a card to discard, then all of those cards are discarded simultaneously. No one sees what the other players are discarding before deciding which card to discard.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.
E. M. Gist2020-08-13
