Advanced format ruling
Gladiator Beast's Battle Archfiend Shield
Card effect (current official text)Equip only to a "Gladiator Beast" monster. If the equipped monster would be destroyed, destroy this card instead. When this card is sent to your Graveyard because the equipped monster you controlled was shuffled into your Deck: Return this card to your 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.