703.4.b. Remedies: 703.4.b.1. If the error is caught by any player before opening hands have been drawn, restore the deck to its correct state if possible and instruct players to proceed. 703.4.b.2. If the error is caught by the erroring player after opening hands have been drawn and it is easily possible, restore the deck to its correct state and instruct players to proceed. For example: 703.4.b.2.a. In game one of a match a player realizes they forgot to restore their deck to a pre-sideboard state. 703.4.b.2.a.1. A judge can restore their deck to the appropriate state by returning cards to the main deck and sideboard as needed. 703.4.b.2.a.1.a. If sideboard cards are in the player's hand, they are replaced randomly by main deck cards that were incorrectly in the sideboard. 703.4.b.2.a.2. Shuffle the randomized portion of the main deck once this process is complete. 703.4.b.3. If the error is caught by a player other than the erroring player after opening hands have been drawn, the penalty is upgraded to [Game Loss]. 703.4.b.3.a. At casual or competitive OPL, if the error is a player forgetting to move their Chosen Champion from their Main Deck to the chosen champion zone at setup, the judge may downgrade the penalty to a [Warning] and restore the gamestate if possible, regardless of who caught the error or at which stage of the game it occurred. 703.4.b.3.b. Players may request a judge check an opponent’s deck for legality. (Example: A player believes an opponent has a sideboard card in the first game.) 703.4.b.4. If restoring the deck to its correct state is not possible, the penalty is upgraded to [Game Loss]. 703.4.b.4.a. When applying a remedy for a missing Chosen Champion is applicable, if it occurs at any point after opening hands have been drawn and no copies of the Chosen Champion are available in the Main Deck to move to the Chosen Champion zone to restore the gamestate, the penalty may be downgraded to a [Warning] and gameplay can continue without the erroring player having a champion in the Chosen Champion zone. 703.4.b.4.b. Example: A player has two total copies of Traveling Merchant on their registered decklist, one in their Main Deck and one in their Sideboard. During game one of a match a player draws and plays one Traveling Merchant. On a later turn, they draw the second copy and realize they forgot to de-sideboard. At this point, restoring the deck is not possible. 703.4.b.5. If the cards required to correct the deck cannot be acquired in a timely manner, the head judge can issue a proxy.