Tengu format ruling
Flamvell Firedog
Card effect (current official text)When this card destroys an opponent's monster by battle and sends it to the GY: You can Special Summon 1 FIRE monster with 200 or less DEF from your Deck, except "Flamvell Firedog".
Rulings
① Choose 1;
- Target 1 face-up monster your opponent controls; change that target's battle position.
- Tribute 1 monster, then target 1 face-up monster your opponent controls; until the End Phase, take control of that target.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Tengu forum — sourced change requests get reviewed.