Advanced format ruling
Morphtronic Boomboxen
Card effect (current official text)● While in Attack Position, this card can attack twice during each Battle Phase.
● Once per turn, while in Defense Position, when a face-up "Morphtronic" monster you control is targeted for an attack: You can negate the attack.
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.