Monstrous War-Leech

A body that measures your graveyard instead of your board: the greatest mana value sitting in your yard becomes the creature's power and toughness, so this Leech Horror is a running tally of the most expensive spell you have discarded, milled, or sacrificed. That reading is the whole gamble, because the card guarantees nothing about its own size. Unkicked, it is a black four-drop whose stats depend entirely on graveyard work done elsewhere: a self-mill payoff with no self-mill engine bolted on. Paying the blue kicker primes the pump by milling four on entry, but four cards is a shallow dig, and what it adds is capped by whatever happens to be the fattest card among those four rather than by anything the design promises. The design tension lives in that gap between modes. The card wants a graveyard already stocked with high-cost spells to reliably become a threat, yet its only self-contained contribution toward that goal is a modest four-card dip. It plays best as a closer in a deck that fills its graveyard with expensive cards through discard, mill, or reanimation setup, and worst as an opener trying to build value from an empty yard. The blue splash on a black creature is the flavor of the payment: you spend across colors to fuel a graveyard the card then reads back to you.