We had this come up at a practice game in our store. Uzuri plays Codex of Frailty, and both players have an empty arsenal. Per the release notes on Codex:
“Players choose and put the card in their arsenal starting with the turn player and going in player turn order (clockwise) around the table. Then the players that have successfully done so, choose and discard a card starting with the turn player and in the same player order.”
How exactly does that sequence work? Does the turn player choose their card and have to show the defending player what card they picked at any point before the defending player decides what card they are grabbing? Or is verification of grabbing an attack action card done after the card fully resolved?
We are assuming that the cards need to be shown to verify to your opponent an attack action card was grabbed, even though Codex does not actually state the card must be revealed.