Sengir, the Dark Baron

Baron Sengir has haunted black legend design since the vampire first appeared as a homelanding villain, and this incarnation rebuilds him around the two things a dark baron is supposed to do: grow fat on death and profit from another player's ruin. The first ability turns the whole board's mortality into fuel, and it doesn't discriminate: creatures dying to combat, to sweepers, to sacrifice outlets, or to their own controller's decisions all feed him two counters at a time, which means a stalled table full of chump blockers is quietly building a lethal flier. The 4/4 flying body is a modest starting rate, but the counter engine is designed to spiral in exactly the kind of grindy, attrition-heavy game where death triggers never stop. The second ability is where the Baron shows his real appetite: it converts a knockout into a life gain scaled to the eliminated player's total, since a player who topples early can hand you a mountain of life in a single trigger. Partner keeps him from being a solo act, letting the grow-and-gain plan share the spotlight with a second legend. He rewards the patient seat: the one still sitting when the bodies have piled up, the players have fallen, and the counters and life totals have all been redistributed into his column.