Tengu format ruling
Rai-Jin
Card effect (current official text)All LIGHT monsters you control gain 100 ATK for each LIGHT monster in your Graveyard. During your End Phase, destroy 1 LIGHT monster you control. There can only be 1 face-up "Rai-Jin" on the field.
Rulings
- If Rai-Jin is face-up on your side of the field and you don't have any LIGHT Monsters in your GY, Rai-Jin's ATK is 0.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Tengu forum — sourced change requests get reviewed.