Goat format ruling
Mirror Force
Card effect (current official text)When an opponent's monster declares an attack: Destroy all your opponent's Attack Position monsters.
Rulings
"Mirror Force" is not a targeting effect, regardless of the number of monsters it destroys.
- Monsters turned face down or removed from the field in a chain with "Mirror Force" are not destroyed.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Goat forum — sourced change requests get reviewed.