Merchant of Many Hats
Recursion in the cheapest possible package: a 2/2 for one and a black, carrying an activated ability that pulls it back from the graveyard to your hand for three mana. That return clause, usable any time the card sits in the yard, is the entire strategic point; the body is fodder, not a reason to attack. The job is guaranteeing a sacrifice engine never runs dry. Feed it to an outlet, pay the black and two to return it, recast it, feed it again: the full loop runs five mana per cycle, converting a single creature into a renewable supply of death triggers and enters-the-battlefield fodder, bounded only by the mana you can spare. This is the same attrition work Bloodsoaked Champion and Gravecrawler have long done for black aristocrat shells, though those return themselves for less and demand conditions this one waives, so the recursion here is slower and priced to match. What the return-to-hand phrasing buys instead is patience: because it comes back to hand rather than the battlefield, you can sit on it until the sacrifice piece is online rather than being forced to redeploy it into a board that cannot use it. The activation still needs the card to reach the graveyard, so any effect that exiles creatures as they die shuts the loop off entirely. Within those bounds it is a reusable resource wearing a creature's body, built for grind decks that want things to throw away rather than things to swing with.
