Flowstone Infusion

A minus-toughness effect belongs to red's oldest workaround for a color that was never meant to have unconditional creature removal: kill by shrinking, not by burning. Where a one-mana burn spell prints a fixed number of damage and can reach a larger creature, a flat -2 toughness only removes anything with two toughness or less, so this is precise where a bolt is blunt. It kills what a bolt could kill and misses what a bolt kills for free, but it does one thing burn cannot: it drops toughness in combat to change math a damage-based answer leaves untouched. The direction of the modifier is the whole tension. Point it at a small enemy body and it reads as removal; point it at anything with three or more toughness and you hand the opponent a briefly bigger creature for a wasted card. Aimed at your own attacker it is a +2/-2 pump, and the toughness cost is real: if that creature was already at two toughness or less, it dies immediately as a state-based action rather than surviving to attack. Instant speed is where the payoff lives. Hold it, let a creature commit to a block or an attack, then collapse the exchange after the opponent has no way to reroute. It descends from red's toughness-reducers, the ones that trade the reliability of raw damage for the reach to answer things burn simply cannot.