Demon Bolt

Four damage to a creature or planeswalker at instant speed is a wide net: it clears nearly everything that matters in fair midrange, and the toughness it fails to reach sits high enough to rarely come up. But raw reach is not the design. Foretell reshapes what a three-mana removal spell can be. Banking the card face down on a quiet turn for two generic mana, then releasing it later for a single red, splits the cost across two windows and converts spot removal into a prepaid answer waiting in exile. The mechanic solves the recurring problem of the dead card in hand: an answer with no target yet is stranded value, and paying part of its cost early puts that mana to work while it waits, all while sidestepping the discard and hand disruption that would otherwise strip it. There is a second axis, too. A face-down foretell card could be any of a dozen things, so an opponent playing around burn has to respect a threat they cannot confirm. That information asymmetry is the real reason a designer reaches for foretell on a removal spell rather than simply pricing the effect cheaper. The rate alone would be serviceable; the two-part tempo and the concealed intent are what give it a reason to exist alongside every other four-damage instant that came before.