Advanced format ruling
Butterfly Dagger - Elma
Card effect (current official text)The equipped monster gains 300 ATK. When this card is destroyed and sent to the Graveyard while equipped: You can return this card to the hand.
Current rulings for this card are maintained by Konami.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Advanced forum — sourced change requests get reviewed.