Machamp (43) [Wizards of the Coast: Black Star Promos] WTR119-M Send 1 monster card from

Send 1 monster card from your hand to the Graveyard to destroy all face-up monsters on your opponent's side of the field with an ATK equal to or less than the ATK of the sent monster

you can select 1 face-up "Blackwing" monster you control

But if you’re truly looking to keep enemy units from escaping with sensitive information

return 1 Flip Effect Monster from your Graveyard to your hand

Metal Rarity: Ultra Rare Retreat cost: 3

Machamp (43) [Wizards of the Coast: Black Star Promos] WTR119-M Send 1 monster card fromSet: Wizards of the Coast: Black Star Promos Type: Fighting Rarity: Black Star Promo Retreat cost: Colorless,Colorless,Colorless