Hollow Marauder

Cost reduction that scales off creatures in the graveyard is an old graveyard-payoff trick, but the twist is that the yard isn't fuel for a recursion loop: it's just a discount toward a body that punishes the opponent for keeping the wrong cards. Nominally a seven-mana Specter, this comes down for far less once bodies have started stacking up in your yard, and the enters trigger turns a graveyard-matters shell inside out. Instead of asking your own yard to do the work, it targets any number of opponents' hands and forces each to discard, then hands you a card for every opponent who didn't discard something with mana value 4 or greater. That last clause is the design's real engine: it's a discard spell that rewards you for hitting decks light on expensive cards, which are precisely the decks least equipped to trade back. Aggro, tempo, and low-curve control all tend to fold the cheap cards you most want gone, so the replacement draw becomes a near-guarantee against them and a coin flip against the midrange piles that keep four-plus-drops in hand. What sets this apart from a plain hand-attack spell is that it reads the opponent's curve as a resource, punishing the same lean hand it's most likely to find across from an aggressive deck.