Tengu format ruling
Emissary of the Afterlife

Card effect (current official text)When this card is sent from the field to the Graveyard: Each player adds 1 Level 3 or lower Normal Monster from their Deck to their hand.
Rulings
- If neither player has a Level 3 or lower Normal Monster in their Deck, the effect of Emissary of the Afterlife disappears BUT both players get to look at their opponent's Decks before they are shuffled.
- If only 1 player as a Level 3 or lower Normal Monster in their Deck, then that player gets to add the monster to his hand.
- You select monsters when the effect resolves. The effect of Emissary of the Afterlife does not target.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Tengu forum — sourced change requests get reviewed.