MANAHIVE

Equivalent cards to “Lethal Throwdown” (Sorcery, Black, destruction effect, possible draw):
1. “Bone Splinters” — Sorcery, B, as an additional cost, sacrifice a creature. Destroy target creature.
2. “Spark Harvest” — Sorcery, B, as an additional cost sacrifice a creature or pay 3B. Destroy target creature or planeswalker.
3. “Village Rites” — Instant, B, sacrifice a creature. Draw two cards. (has card draw, but doesn’t destroy)
4. “Plumb the Forbidden” — Instant, 1B, sacrifice creatures for additional effect. Draw cards. (has card draw, but doesn’t destroy)

Closest exact analog is “Spark Harvest”; none perfectly copies “Lethal Throwdown”’s card draw for a modified creature, but the above are mechanically similar in black.