Goat 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.
- If the only other Dragon monster on the field is destroyed as a response to "Cave Dragon" declaring an attack, the "Cave Dragon’s attack is stopped.
- If "Skill Drain" is applying on the field, "Cave Dragon" may still not be Normal Summoned if there are any other monsters on the field. If "Skill Drain" is applying on the field, "Cave Dragon" may attack even if there are no other Dragons on the field.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Goat forum — sourced change requests get reviewed.