Advanced format ruling
Assault Armor
Card effect (current official text)Equip only to a Warrior-Type monster that is the only monster you control. It gains 300 ATK. During your Main Phase 1, you can send this equipped card to the Graveyard to allow the equipped monster to attack twice during each Battle Phase this turn.
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.