Interceptor, Shadow's Hound

Recursion priced to the swing, not the cast. The graveyard-return clause fires only when you attack with one or more legendary creatures, and only for each time, which reframes the 4/3 as a reusable attacker that keeps clawing back into combat rather than a body you cast once and mourn. Because the trigger cares about the act of attacking with legendaries, any legendary creature you swing with becomes the fuel that reanimates the hound turn after turn: the swing enables the reanimation, though you still pay to bring it back the way most sacrifice-and-recur value engines demand their own tax. That the menace-granting line reaches past its own body to every Assassin you control is the tell for who it was built for: a black creature-type payoff that wants a board of evasive threats punching through blockers together, with the Dog serving as both anthem and recurring attacker. Nothing about the rate reads as loud. The 4/3 dies to nearly anything, and the return cost stacks up across a long game. But as a persistent evasive body that punishes an opponent for leaving your graveyard unanswered, it does honest work in a legendary-matters or Assassin-tribal shell that wants its threats to refuse to stay dead.