Doomsday
At the beginning of the game, choose a character die's name.
When fielded, KO target character die with the chosen name.
Moon Knight
At the beginning of the game, choose one of your Avengers character cards. For the remainder of the game, Moon Knight is considered to have the text of that card (including Global Abilities) instead of this text (replacing their name with his own, if applicable).
With the addition of abilities like Doomsday and Moon Knight, players are now allowed to make selections at the beginning of the game. If both players happen to bring cards with abilities like these, does each player make their choice in secret then reveal the choice? Should the choice follow player order with the First Player making their selection and the Second Player making their choice after? Is there another way this should be decided?