Edison format ruling
Rocket Jumper
Card effect (current official text)If the only cards on your opponent's side of the field are Defense Position monsters, this card can attack your opponent's Life Points directly.
Rulings
- If your opponent has only Defense Position monsters on the field, you can attack directly with Rocket Jumper, but if your opponent has a Spell or Trap Card, you cannot attack directly with Rocket Jumper.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Edison forum — sourced change requests get reviewed.