Mishra's Onslaught

The two halves resolve the same tactical question from opposite ends of a race. Behind on board, the token mode buys two chump blockers and a pair of bodies to rebuild with; ahead on board, the anthem mode converts an existing swarm into lethal by pushing everyone two points harder. What ties them together is that both modes want a wide battlefield already in play: the anthem does nothing for an empty side, and the tokens are only meaningful when they add to a crowd. That makes this less a flexible spell than a go-wide spell wearing two faces, useful specifically to a deck that has committed to fielding several small creatures and now needs either to protect that investment or to cash it in. The instant speed is the quiet load-bearing detail: holding it up means an opponent has to attack or block into an ambush of two surprise blockers or a two-point pump across the team, and the choice stays open until the exact combat step where one answer is worth more than the other. Making the tokens artifact creatures is a minor tell toward the mechanical throughline of its era, where colorless soldiers and artifact synergies ran through the whole set, but the card reads fine without that context: a red combat instant built for the aggressive board it assumes you already have.