Discarding Cards
The active player can discard from their hand any number of cards belonging to the active house during step 3 of their turn. When a card is discarded, it is placed faceup on top of its owner’s discard pile.
Unless otherwise specified, when an ability refers to a player discarding a card, the discarded card must come from that player’s hand.
If an ability requires a player to discard multiple cards from either their hand or the top of their deck, the cards are discarded one at a time.
If an ability instructs both players to discard cards, the active player decides which player will discard first. That player reveals all cards to be discarded to fulfill the instructions of the ability, then the active player places the cards into the owner's discard pile in the order of their choosing. Once all revealed cards have been discarded, the other player reveals all cards to be discarded to fulfill the instructions of the ability and the active player places the cards into the owner's discard pile in the order of their choosing.