Cabal Therapist

Cabal Therapy was one of black's defining engines: a sorcery whose flashback cost was a creature, so you could name a card, cast, then feed it a body to strip two copies from an opponent's hand across two casts. This turns that spell into a recurring body. At the beginning of your first main phase, if you have a creature to feed it, you get a Therapy trigger, so the discard becomes an engine rather than a one-time act. The sacrifice requirement is the price and also the point: it converts dying creatures into information and disruption, which is why it wants to sit next to anything that spits out expendable bodies (tokens, recursive threats, aristocrat fodder). The menace on a 1/1 is almost incidental, a nod to the Horror flavor, though it means the card can still chip in when there is nothing worth sacrificing. The sharp part of the design is the tempo inversion: a proactive discard spell now sits on the board as a passive threat, forcing your opponent to keep their hand thin turn after turn or watch you rip apart their plan the moment you cash in a creature. The naming clause still demands the same read the sorcery always did, guessing right at the key card in hand, but here you get more bites at that guess than a single cast ever allowed.