Advanced format ruling
Catoblepas and the Witch of Fate
Card effect (current official text)When your opponent Special Summons a monster(s), you can remove from play 1 monster with ? ATK from your Graveyard to destroy that Special Summoned monster(s).
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.