Ragamuffyn

The engine hinges on an empty hand: this Zombie Cleric stays inert until you have run yourself dry, then converts spare creatures and lands into fresh draws, one at a time, a tap apiece. That gating is the entire balancing act. Hellbent rewards the kind of black deck that wants to empty its hand fast and refill from the top, but it punishes hoarding: a single card clutched in hand shuts the ability off completely, which means the deck has to lean on discard, cheap spells, or a willingness to dump everything before it can start mining the battlefield for fuel. The tap-and-sacrifice structure makes this a slow grind rather than a burst of cards; you get exactly one per turn, and each one eats a permanent you have already committed. What it really wants is a board it is happy to feed away, the leftover bodies of an aggressive curve or excess lands in the late game, turned into a steady trickle of gas when the deck would otherwise be running on fumes. As a 2/2 it offers no protection for the engine, so the price is honest: an opponent who fears the card-advantage trickle can remove it before you ever empty out. The design captures the early-era hellbent idea in miniature, an engine that only exists in the part of the game where most decks have already burned through their resources.