Ghitu Fire

What you pay for here is not the damage, which any X-spell delivers, but the option to deliver it at instant speed. Fireball and its descendants are sorceries by design: a scaling burn spell that can be held up is a different animal, capable of ambushing an attacker, removing a blocker as its activated ability goes on the stack, or finishing a player on their end step before they can stabilize. This bolts that flexibility onto the template with a tax: pay two extra and the sorcery casts as though it had flash. The bargain is clean. With mana to spare, you buy a window the baseline X-burn never offers; when you are tapped low, the spell resolves for its floor rate on your turn and costs you nothing for the option you declined. The two-mana surcharge is what stops the instant-speed mode from being free, since handing scaling reach genuine flash without a cost would make this strictly better than every sorcery it competes with. It is a modest design idea executed with precision: take a known effect, expose its single structural weakness (the sorcery-speed restriction), and sell the fix back to the caster at a fair price. The result reads quietly on the page but changes how the spell plays at the table, because the threat of an instant-speed burn you can scale is worth more than the burn itself.