Advanced format ruling
Mirror of Oaths
Card effect (current official text)When your opponent Special Summons a monster(s) from their Main Deck: Destroy that monster(s), and if you do, draw 1 card.
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.