Edison format ruling
Blind Destruction

Card effect (current official text)Once per turn, during your Standby Phase: Roll a six-sided die. If the result is 1-5, destroy all monsters on the field with the same Level as the number rolled. If it is 6, destroy all Level 6 and higher monsters on the field.
Rulings
- Rolling a die is not optional, you must roll one each of your Standby Phases. If you have two copies of Blind Destruction active on the field you roll two dice each of your Standby Phases.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Edison forum — sourced change requests get reviewed.