Malevolent Noble

The sacrifice outlet is the interesting part, not the payoff. This design pairs a repeatable way to convert artifacts and expendable creatures into board presence, but the mechanism it stapled to a body matters more than the counter it produces. The self-buff only ever grows the Noble itself, and it grows slowly: two mana and a permanent for a single +1/+1 counter is a deliberately gentle rate, because the point was never to build a fatty. The point is having an outlet at all. Aristocrats decks live or die on whether their death triggers and sacrifice payoffs have somewhere to fire, and this asks almost nothing of the deck except bodies to spend and the mana to spend them. The activation cost being generic rather than colored helps too: it does not tax the black mana the surrounding pieces already want. Where the card earns its slot is as connective tissue, not as a threat. The Noble does not need the sacrifice to grow it in order to matter; it needs the sacrifice to happen, so that whatever else the deck cares about (drain triggers, recursion, food for a bigger engine) gets to trigger. That makes it a common-rarity workhorse for a build-around theme rather than a card anyone leads a strategy with: a modest engine piece for decks already committed to trading permanents for effects elsewhere.