Reprieve

In Commander, Reprieve fills a niche most white decks quietly need: a one-mana instant that doubles as protection and soft disruption. Bouncing an opponent's commander back to the command zone at a critical moment can be just as back-breaking as a hard counter, and the ability to rescue your own permanent from targeted exile gives it real flexibility. In Legacy and Vintage, it sits in the shadow of harder permission like Force of Will and Flusterstorm, but it's a clean answer in creature-based tempo strategies that want cheap interaction without card disadvantage. Modern sees it as a fringe option — mostly in decks that exploit the bounce-to-hand loop rather than straight control shells. Its absence from Pioneer, Standard, and Pauper limits the card's reach, but in the formats where it's legal, Reprieve punches above its cost whenever replaying the bounced spell generates more value than a counterspell would have.