Tengu 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.
Rulings
- Destroying Deck Lockdown during the Standby Phase does not start a Chain.
- Monsters can be Special Summoned from the Extra Deck while "Deck Lockdown" is active.
- Reinforcement of the Army, the effect of Green Gadget, etc. cannot be activated while Deck Lockdown is active.
- If Sangan is sent from the field to the GY while Deck Lockdown is active, its effect will start a Chain but its effect will disappear when it resolves.
- Crystal Seer's effect can activate while Deck Lockdown is active, but the card you would add to your hand is sent to the GY instead.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Tengu forum — sourced change requests get reviewed.