Castigate

In Commander, Castigate trades some efficiency for high-value targeting: you see the hand, pick the most dangerous threat, and exile it before it ever touches the battlefield. That's strongest in the early turns against combo players or decks running a single silver-bullet answer. In Pauper it's a legitimate role-player — black-white control shells run it for the exile precision that Duress and Thoughtseize effects sometimes lack at common. Legacy and Vintage have faster, cheaper discard available, so Castigate rarely sees those tables. Oathbreaker mirrors the Commander case: targeted hand disruption on turn two can kneecap a combo signature spell before the game starts.