The following document contains information originally provided by Alfonso Bueno and  Daniel Sole.

The standard procedure to make a Deck Check is the following:

1. Choose a random table – cheaters can be in all the tournament, not just in the
first tables.

2. One judge goes for the decks. The other looks for the lists. Be careful with:
a. Not being noticed.
b. Way of shuffling.
c. Collect after presenting.
d. Note the time passed.
Problem 1: A player cuts his opponent’s deck without presenting his.

3. Check randomization – avoid changing order.
Problem 2: Land/2 spells/Land/2 spells/…
Problem 3: Perfect initial hand.

4. Compare the decklist against the deck – Follow the list and check if the cards
really appear. Match the list to the deck.
Problem 4: Not Desideboarded.
Problem 5: List 59 cards, playing 60 cards.

5. Check the sleeves-Separate those marked.
Problem 6: Marked Pattern/Marked No pattern.

6. Check the sideboard
Problem 7: More cards in the deck box (without sleeves).

7. Write down in the deck list the DC, give the decks back and give extra time

Download The Art of Deck Checking.