Edison format ruling
Cave Dragon
Card effect (current official text)Cannot be Normal Summoned while you control a monster. This card cannot declare an attack unless you control another Dragon-Type monster.
Rulings
- If you have 2 copies of Cave Dragon on the field, they can both attack.
- You can still Set, Flip Summon, and Special Summon Cave Dragon if there is another monster on your side of the field.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Edison forum — sourced change requests get reviewed.