Advanced format ruling
Delta Attacker
Card effect (current official text)You can only activate this card while there are 3 Normal Monsters of the same name (except Tokens) on your side of the field. The 3 Normal Monsters of the same name can attack your opponent's Life Points directly during the turn this card is activated.
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.