Advanced format ruling
Reptilianne Medusa
Card effect (current official text)Send 1 card from your hand to the Graveyard and select 1 face-up monster your opponent controls. The ATK of the selected monster becomes 0, and it cannot change its battle position.
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.