Arrow Storm

Five mana for four damage is a rate nobody pays in a vacuum; the raid clause is the whole transaction. Attack first, and the spell flips from a sluggish 4-to-any-target into 5 unpreventable damage, a number that crosses the threshold from "removal" into "reach." That conditional reframes the card from a removal spell into a closer: it is priced to be cast in a turn where you are already on the offensive, rewarding the deck that committed to combat by handing it the points to finish. The unpreventable rider is the quiet half of the upgrade, since the kind of opponent stabilizing with fog effects or damage prevention is exactly the one a tempo-aggro deck most needs to push through. The structural problem is that you pay full freight for a payoff that depends on board state you may not have, and a five-mana sorcery that only sometimes deals five wants a deck built to satisfy the trigger nearly every turn. That makes it less a flexible answer than a commitment: a burn spell that asks you to already be winning the race before it earns its premium.