Preacher

A theft engine built around a delicious bit of friction: the target is chosen by your opponent, not you. That clause is the whole design. You name no creature, point at no bomb; instead the player you are stealing from hands over whatever they value least, which means the steal is only as good as their worst board state. The control lasts exactly as long as the Preacher stays tapped, so you trade your own untap step for a hostage, and the moment you choose to untap (or the Preacher itself dies or otherwise leaves the battlefield) the borrowed creature goes home. This is a Mind Twist-era reading of mind control: a permanent's tap status as a leash, the kind of state-based bookkeeping the early sets were unafraid to ask of players. The 1/1 body is irrelevant; what you are paying for is a recurring, opponent-mediated Control Magic that can swing each turn cycle to grab the least-bad option as the board changes. The opponent's-choice restriction is what keeps the rate honest: a creature that could simply annex the best thing on the table for three mana would be absurd, but one that lets the victim minimize the damage is a negotiation, not a heist. It is a strange, fiddly, deeply old-Magic card, the sort of effect design has since walled off behind cleaner templating and much higher costs.