Treacherous Urge

Threaten effects steal a creature you already see across the table; this one reaches into a hand and pulls a creature that has not been cast yet, before its owner ever gets to use it. That distinction is the whole design. Instead of borrowing the biggest body in play and swinging it back at its controller, you reveal the opponent's hand, take the best uncast threat, and run it for a turn with haste before it is sacrificed and the lease expires. The effect is a hybrid: part Duress-style hand reveal, part one-turn animation of a card that should have been a future play. It punishes a hand that is sandbagging a finisher, since the reward scales with what the opponent is holding rather than what they have committed. The cost of doing this at instant speed is the five mana and the strict one-turn lease: the creature leaves regardless, so the upside is a single attack, a single activated ability, or a sacrifice you control rather than permanent possession. It belongs to the era when black began borrowing from the cards opponents had not yet revealed, treating the hidden hand as a resource to be raided rather than merely stripped.