Bring Down

The Assist mechanic exists almost entirely to make Two-Headed Giant and other multiplayer politics tangible, and this is the clean test case for it: a four-mana sorcery where a teammate can shoulder up to three generic mana of the cost, leaving you to put down a single white pip and point at whatever has gotten too big. That changes the spell's economics in a way the rate alone hides. On paper it is overpriced removal with a power restriction, the kind of effect white has handed out at common for years. With Assist, the question shifts from "can I afford this" to "can the table afford to let this resolve," because the cost is socialized across whoever wants the fat creature dead as much as you do. The power-4-or-greater clause is the lever that makes the negotiation work: it can only ever answer the threats big enough that someone else at the table also wants them gone, which is precisely the situation where a stranger will happily kick in a few mana of their own. It will not kill a mana dork or a hatebear, and that narrowness is deliberate. As an experiment in cooperative casting it is more interesting than it is good, a removal spell whose real text is the conversation it starts before it is cast.