Coercive Recruiter

Threaten effects have always paid for their tempo swing with fragility: you borrow a body for one turn, swing, and hand it back. This design converts that one-shot theft into a repeatable engine by tying the trigger not to itself alone but to any Pirate entering under your control. The Threaten becomes a rider on a tribe's normal battlefield development, so every subsequent Pirate that lands yanks another creature across the table, untapped, hasted, and swinging back at its owner. The clause turning the stolen creature into a Pirate does not trigger anything (changing control and adding a type is not an enter-the-battlefield event); its real work is combat-flavored and count-based, letting the borrowed body attack alongside your other Pirates and feeding effects that reward a wide Pirate board while you have it. The 4/3 is beside the point; what matters is that this reframes the borrow-and-return template as a tribal payoff rather than a standalone tempo card. A single copy is a fine one-turn beater. Two or more, alongside a steady stream of Pirates, turns the opponent's board into extra bodies for your combat step, one creature at a time, every time something new comes down.