Tengu format ruling
Guard Dog
Card effect (current official text)FLIP: Your opponent cannot Special Summon for the rest of this turn.
Rulings
- If your "Guard Dog’s" Flip Effect resolves, and then later "Cyber Jar" is flipped face-up, your opponent will not be able to Special Summon any of the monsters they pick up, and any monsters that would normally be Special Summoned will be destroyed instead.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Tengu forum — sourced change requests get reviewed.