Tengu format ruling
Sanguine Swamp
Card effect (current official text)If you control any other Spell or Trap Cards, destroy this card. Face-down Spell and Trap Cards cannot be activated. Destroy this card during your 2nd Standby Phase after activation.
Rulings
(1) If you control any other Spell or Trap Cards, destroy this card. (2) Face-down Spell and Trap Cards cannot be activated. (3) Destroy this card during your 2nd Standby Phase after activation.
- The (1), (2), and (3) Continuous-like Effects do not start a Chain.
- If you activate Sanguine Swamp while you control face-down Spell or Trap Card(s), it is destroyed after it resolves.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Tengu forum — sourced change requests get reviewed.