Advanced format ruling
Tragedy
Card effect (current official text)When a face-up Attack Position monster(s) your opponent controls is changed to face-up Defense Position: Destroy all Defense Position monsters your opponent controls.
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.