Edison format ruling
Sword of the Soul-Eater
Card effect (current official text)You can only equip this card to a Level 3 or lower Normal Monster on your side of the field. When you activate this card, Tribute all Normal Monsters (except Tokens) on your side of the field, except the equipped monster. Increase the ATK of the equipped monster by 1000 points for each Normal Monster that you Tributed.
Rulings
- You can activate Sword of the Soul-Eater even if the monster you're equipping it to is the only monster on the field.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Edison forum — sourced change requests get reviewed.