Budget Alternatives to Culling the Weak

Spark Harvest $0.05 B · Sorcery As an additional cost to cast this spell, sacrifice a creature or pay {3}{B}. Morkrut Behemoth $0.06 4B · Zombie Giant As an additional cost to cast this spell, sacrifice a creature or pay {1}{B}. Eaten Alive $0.09 B · Sorcery As an additional cost to cast this spell, sacrifice a creature or pay {3}{B}. Mutual Destruction $0.09 B · Sorcery This spell has flash as long as you control a permanent with flash. Nasty End $0.09 1B · Instant As an additional cost to cast this spell, sacrifice a creature. Final Vengeance $0.09 B · Sorcery As an additional cost to cast this spell, sacrifice a creature or enchantment. Worthy Cost $0.10 B · Sorcery As an additional cost to cast this spell, sacrifice a creature. Tendrils of Despair $0.15 B · Sorcery As an additional cost to cast this spell, sacrifice a creature. Skulltap $0.19 1B · Sorcery As an additional cost to cast this spell, sacrifice a creature. Bone Shards $0.24 B · Sorcery As an additional cost to cast this spell, sacrifice a creature or discard a card. Corrupted Conviction $0.25 B · Instant As an additional cost to cast this spell, sacrifice a creature. Writhing Chrysalis $0.26 2RG · Eldrazi Drone Devoid Desperate Plea $0.38 1B · Lesson As an additional cost to cast this spell, sacrifice a creature. Metamorphosis $0.39 G · Sorcery As an additional cost to cast this spell, sacrifice a creature. Infernal Plunge $0.42 R · Sorcery As an additional cost to cast this spell, sacrifice a creature. Master of Dark Rites $1.80 B · Vampire Cleric {T}, Sacrifice another creature: Add {B}{B}{B}.