Tengu format ruling
Sinister Serpent
Card effect (current official text)During your Standby Phase, if this card is in your GY: You can add it to your hand, also banish 1 "Sinister Serpent" from your GY during your opponent's next End Phase. You can only use this effect of "Sinister Serpent" once per turn.
Rulings
- The effect of this card activates no matter how it is sent to the GY. It can be destroyed, Tributed, discarded from the hand, or sent straight from the Deck to the GY.
- You cannot activate the effect of Sinister Serpent if The End of Anubis is on the field.
- Necrovalley does not negate the effect of Sinister Serpent.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Tengu forum — sourced change requests get reviewed.