Tengu format ruling
Ehren, Lightsworn Monk
Card effect (current official text)If this card attacks a Defense Position monster, before damage calculation: Shuffle that monster into the Deck. Once per turn, during your End Phase: Send the top 3 cards of your Deck to the Graveyard.
Rulings
- If this card attacks a Set monster, that monster is flipped face-up, shuffled into the Deck, and after Damage Calculation its Flip Effect (if any) is activated. However, that Flip Monster’s effect is treated as being activated on the field (and can be negated by Light-Imprisoning Mirror).
- If you control multiple "Lightsworn" monsters, their End Phase effects don’t chain to each other (they each activate, one after another).
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Tengu forum — sourced change requests get reviewed.