For Summoner Skirmish deck checks, do you check only the 40 cards + 12 runes being played that game, or the entire deck box including all 48 main deckable cards + sideboard?

Ruling: Check the entire deck box, including both the main deck and sideboard. You must verify the correctness of the sideboard against the decklist to ensure no unregistered cards are present.

Sequence:

• Take the entire deck box when performing a deck check
• Verify the main deck (40 cards + 12 runes) being played
• Verify the sideboard (8 cards or 0 cards) against the decklist
• Keep the presented deck and deck box contents organized to clearly identify what the player is attempting to play with

Nuances:

• Without checking the sideboard, there's no guarantee that unregistered cards aren't hidden in the deck box
• A player cannot prove they didn't use an illegal card if excess cards are found in the deck box but not checked
• The sideboard is considered part of what is presented to the opponent according to tournament rules