Advanced format ruling
Handcuffs Dragon
Card effect (current official text)When this card is destroyed by battle with an attacking monster your opponent controls and is sent to the Graveyard, you can equip this card to that monster. The equipped monster loses 1800 ATK. When it is destroyed and this card is sent to the Graveyard, you can Special Summon this card.
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.