Bionic Blow

The pump-into-fight template gets a compression twist: because the X buys only power, and that power then becomes the damage number, every point you spend does double duty. Push X to three and a creature swings for three extra while throwing its whole boosted power at something across the table; that stacked-value math is a better rate than a bare pump spell or a bare burn spell offers alone. The card lives on the seam between combat enhancement and removal, but the sorcery timing pins it to your own turn: no ambushing a blocker on the opponent's step, no instant-speed snipe. You commit on your main phase, either sizing up an attacker before combat or firing the damage clause without declaring an attack at all. Two catches keep it grounded. The damage source is a creature you control, so the target's toughness and any protection or prevention it carries still apply, and your body has to be on the board (and stay alive) to deliver. The damage runs one direction only: this is a bite spell in the Rabid Bite mold, not a fight spell like Prey Upon, so the targeted creature never deals damage back and you never have to price in a trade. That makes it a clean answer to a lone oversized threat when you have a worthwhile creature to pump, and a genuine blowout on the turn the pumped attacker also lands on a player.