Judgment Bolt

Five damage to a creature at instant speed is already a fair rate for four mana in red; the scaling second half is where the design starts scheming. The X damage to the creature's controller keys off Equipment you control, which quietly asks a burn spell to live in a deck it has no natural home in. Equipment strategies are built around bodies wearing swords, not around holding up removal, so the card pulls its own two halves in opposite directions: the first line wants to kill a blocker and clear the way, while the second only pays out once you have committed several artifacts to the battlefield. Get there, and this stops being spot removal and becomes reach, taking a chunk off an opponent's life total the way a burn finisher does, except the fuel is the same equipment pile that has been carrying the aggression all game. The instant-speed timing matters more than it first reads: it lets the reach come at the end of a combat step, after the equipped attackers have swung and the opponent has tapped out on blocks, so the direct damage lands on a total the board has already pressured. It is a removal spell that files itself under aggro payoff, and the number deciding which of those it is on any given turn sits in your own Equipment count.