Advanced format ruling
White Potan
Card effect (current official text)If you control a face-up Tuner monster, this card cannot be destroyed by battle. When a face-up Tuner monster you control is destroyed by battle and sent to the Graveyard, inflict 500 damage to your opponent.
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.