Tengu format ruling
Poison Chain
Card effect (current official text)During the End Phase of your turn, if you did not attack, you can make your opponent send cards equal to the number of face-up "Iron Chain" monsters you control from the top of their Deck to the Graveyard.
Rulings
- The effect of Poison Chain that activates in the End Phase starts a Chain.
- If your opponent has fewer cards in their Deck than the number of Iron Chain monsters you control, Poison Chain's effect does not activate.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Tengu forum — sourced change requests get reviewed.