Advanced format ruling
Deck Lockdown
Card effect (current official text)Neither player can add cards from the Deck to their hand except by drawing them. Monsters cannot be Special Summoned from the Main Deck. Destroy this card during your 2nd Standby Phase after activation.
Current rulings for this card are maintained by Konami.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Advanced forum — sourced change requests get reviewed.