Kaervek's Hex

The damage math is the whole argument. One point to every nonblack creature, plus another to every nonblack green one, and nothing at all to the controller's own black board: this is a sweeper that picks a fight with one specific enemy color while exempting its caster's entire fifth of the color pie. Green was the deck-fueling, fatty-summoning color of the era, and the extra point is a thumb deliberately on that scale, a color-pie grudge encoded directly into the numbers rather than handed to general utility. The rate is where it falls down. One damage to a board (two against green) clears little beyond the cheapest weenies, and the printing predates any real culture of one-toughness aggro for it to mow through, so the asymmetry rarely converts into a board state worth four mana. What it documents is more interesting than what it accomplishes: a period when black was allowed to openly hate green and shelter its own, with the cost and effect tuned to a matchup instead of to power level. Kaervek himself headlined a run of villain-named removal in the same expansion, the named-character spells early sets leaned on to give a plane its voice. It survives now as a fossil: legible, narrow, and welded to an enemy-color resentment that later designs would express with cleaner and far more efficient tools.