Stoke the Flames

Convoke turns a board of untapped creatures into a discount on burn, and the math here is the whole appeal: four damage to the face that an aggressive red deck can frequently cast for one or two actual mana while still holding up the rest of its turn. The trick is that the creatures paying for it do not have to be tapped at the moment they would otherwise threaten damage, so the spell slots cleanly into a turn where the board has already attacked and the leftover creatures sit idle. That timing window is what separates it from a plain four-mana removal spell: it lets an aggressive deck convert a stalled board into reach without surrendering tempo, closing games that would otherwise run out of gas. Aimed at a planeswalker or blocker, it does honest work; aimed at a face, it is the kind of finisher that punishes the opponent for stabilizing too slowly. The cost line is deceptive precisely because the printed figure rarely reflects what you pay. Convoke as a mechanic has always asked the question of how to price a spell whose real cost is contingent on board presence, and burn is one of the cleaner answers: the more committed your creatures are, the cheaper your reach, which rewards exactly the kind of wide, fast deck that wants four damage on demand in the first place.