Nefarox, Overlord of Grixis

Exalted usually asks for a tradeoff: send one creature in alone, accept the slower clock, take the +1/+1 as compensation. Most exalted payoffs simply sweeten an attack you were already making. This one rewrites the deal. When the lone attacker is the demon itself, the defending player sacrifices a creature before damage, which means the swing strips a body on the way in while a flying threat that exalted has already pumped to 6/6 comes crashing down. The structure turns a mechanic built around restraint into an aggressive lever: the alone-attack clause that normally limits you becomes the trigger condition for both the buff and the sacrifice. Exalted itself was overwhelmingly a Bant signature, born in white-blue-green and rarely venturing into black at all; pinning it to a six-mana demon is the unusual part, and the way the two abilities chain off the same event is the design idea worth dwelling on. The sacrifice is "of their choice," so it is edict-style removal rather than targeted: the opponent sheds their least valuable blocker, but that still clears the path and ignores hexproof or protection entirely. Unlike the classic enters-the-battlefield edict bodies that fire the instant they hit the table, this one carries its removal on an attack trigger, so it takes a turn of summoning sickness before it can swing—though even then its exalted trigger can pump another lone attacker right away. Flying and a five-power body are what give that delayed payoff a real chance to repeat: a finisher built around the single-attacker subtheme black so rarely gets to headline.