Advanced format ruling
Evil HERO Malicious Fiend
Card effect (current official text)"Evil HERO Malicious Edge" + 1 Level 6 or higher Fiend monster
Must be Special Summoned with "Dark Fusion". During your opponent's Battle Phase, all monsters they control are changed to face-up Attack Position, and each monster they control must attack this card, if able.
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.