Kederekt Creeper

Two keywords that need each other, stapled to a body that asks the defender to do unhappy arithmetic. Deathtouch on its own gets chump-blocked all day; menace on its own is an unblocked two-power swing nobody minds eating. Welded together, they force the defender to commit two creatures to keep the Horror off them, then watch both die for it. That shrinks the chump-block math to "trade two for one" and turns a modest 2/3 into a recurring tax on the board: every combat step, the opponent runs the numbers and concludes that blocking is the worse deal. The effect reads closer to a removal spell with legs than to a beater, since the threat is the asymmetry it imposes rather than the damage it deals. The Grixis identity is the cost the rate pays for: a body this disruptive in combat lives in the shard already built to grind out attrition, and the three-color requirement is what stops it from being a colorless commodity printed everywhere. As a piece of evasion-plus-punishment design it is tidy and self-justifying: each keyword props up the other, and the defender ends up paying creatures they did not want to spend.