Advanced format ruling
Assault Mercenary
Card effect (current official text)Once per turn, you can return 1 "Assault Mode Activate" from your hand or Graveyard to the Deck to destroy 1 Spell or Trap Card 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.