Tournament rule 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.2 Shuffle the randomized portion of the main deck once this process is complete.

Official Tournament Rules