Tengu format ruling
Thunder Nyan Nyan
Card effect (current official text)If there is a non-LIGHT monster on your side of the field, destroy this face-up card.
Rulings
- You may Summon Thunder Nyan Nyan even if you have non-LIGHT monsters on the field, but she will be destroyed.
- You can have face-down non-LIGHT monsters on your side of the field, Thunder Nyan Nyan will not be destroyed by her own effect, but if one of these monsters is flipped face-up, she will be destroyed.
- When you take control of an opponent’s non-LIGHT monster, and you have Thunder Nyan Nyan on the field, she will be destroyed. If your opponent takes control of your Thunder Nyan Nyan and he / she controls a non-LIGHT monster, Thunder Nyan Nyan will be destroyed.
- You can Special Summon Thunder Nyan Nyan with the effect of Cyber Jar but if you Summon another non-LIGHT monster face-up she will be destroyed.
- Thunder Nyan Nyan can be destroyed by her own effect between steps in a chain. For example, the opponent targets your Thunder Nyan Nyan with Snatch Steal. You chain Call of the Haunted to Special Summon Dark Magician from your GY, a DARK monster. The chain resolves as follows: Call of the Haunted resolves, Thunder Nyan Nyan is destroyed because there is a DARK monster on the field, Snatch Steal’s effect disappears because the target is no longer on the field.
- If you have a face-up Thunder Nyan Nyan and your Set Penguin Soldier is attacked, when it is flipped face-up Thunder Nyan Nyan will be destroyed, before it can be targeted by the effect of Penguin Soldier.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Tengu forum — sourced change requests get reviewed.