Flame Slash

Four damage for a single red mana is a rate that ignores almost the entire creature curve, and the sorcery clause is the whole price. Most red removal is built to be flexible: instant-speed reach, the option to point it at a face. This trades both away. It cannot be a combat trick, cannot answer a flash threat, cannot finish a player; it works only in your main phase, against almost any creature that has ever cared about being four-toughness or smaller. The contrast with Lightning Bolt is the design conversation here. Bolt buys flexibility (instant speed, any target) and caps its damage at three. This buys a damage threshold high enough to kill the four-toughness midrange creatures Bolt cannot, and pays for it by surrendering everything that makes Bolt a tempo and reach tool both. That tradeoff is why the two coexist rather than compete: one is the answer you hold up, the other is the answer you cast on your turn to clear the board's biggest obstacle. It is the cleanest expression of red's "kill anything for a mana, but only on your terms" school, and the reason it stays relevant in formats that have long outgrown its era is that the things worth killing keep getting bigger while the cost stays at one.