Bring to Trial

Removal that only touches the top of the curve is a deliberate compromise, and the power-4-or-greater clause is where the compromise lives. White gets to exile a threat outright, no death triggers, no recursion, no regeneration; the price is that the spell is dead against anything the aggressive decks it wants to trade with actually play. Mana dorks, tokens, one-drop hatebears, and every two- and three-power beater walk right past it. What it answers cleanly is the payoff at the end of a ramp curve or the fatty a midrange deck spent its turn committing: the bigger the target, the more reliably this handles it. That inversion is the whole design logic. Exile at instant speed would break the rate; making it a sorcery keeps the answer honest and forces you to spend your turn on it, so the card reads as a hard removal spell that trades a class of targets for the finality of exile. It belongs to the tradition of conditional white creature removal that buys its clean exile with a target restriction rather than a mana premium, closer in spirit to the "big things only" answers than to unconditional kill. The restriction is not a flaw to route around; it is the reason the effect is allowed to be this absolute for the cost.