Moonstone Eulogist

Two loops sit on one body, and they only close when they meet. The first turns opponents' dying creatures into Blood tokens, converting removal and combat trades on the other side of the table into a slow trickle of card-filtering artifacts. The second waits for those artifacts to leave: every sacrifice grows this creature and gains a life. Blood is the natural fuel because Blood exists to be sacrificed for a draw, so the token generator and the payoff are built from the same resource. That is the design tension worth noticing: the engine does not run on your own board attrition, it runs on the opponent's losses, which means it wants a grindy, removal-heavy table rather than a race. A 4/4 flier is already a fair clock; the aristocrat framing bends it toward the long game, where each opposing death is both a Blood token and, once cashed in, a counter and a life. The counters accumulate off resources you were spending for cards anyway, so the growth is close to free once both halves are online. It is a black warlock built for the kind of drawn-out multiplayer grind where creatures die constantly and someone else always supplies the raw material.