Advanced format ruling
Horn of Light
Card effect (current official text)Increase the DEF of a monster equipped with this card by 800 points. When this card is sent from the field to the Graveyard, if you pay 500 Life Points, this card returns to the top of your Deck.
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.