Budget Alternatives to Rottenmouth Viper

Devouring Rage $0.08 4R · Arcane As an additional cost to cast this spell, you may sacrifice any number of Spirits. Vicious Betrayal $0.11 3BB · Sorcery As an additional cost to cast this spell, sacrifice any number of creatures. Dargo, the Shipwrecker $0.14 6R · Giant Pirate As an additional cost to cast this spell, you may sacrifice any number of artifacts and/or creatu... Devouring Greed $0.14 2BB · Arcane As an additional cost to cast this spell, you may sacrifice any number of Spirits. Vile Mutilator $0.16 5BB · Demon As an additional cost to cast this spell, sacrifice a creature or enchantment. Thornplate Intimidator $0.16 3B · Rat Rogue Offspring {3} Dusk Mangler $0.17 5BB · Horror As an additional cost to cast this spell, sacrifice a creature, discard a card, or pay 4 life. Perforating Artist $0.18 1BR · Devil Deathtouch Arbiter of Woe $0.21 4BB · Demon As an additional cost to cast this spell, sacrifice a creature. Sentry Bot $0.24 4W · Robot Flash Gorex, the Tombshell $0.29 6BB · Zombie Turtle As an additional cost to cast this spell, you may exile any number of creature cards from your gr... March of Wretched Sorrow $0.30 XB · Instant As an additional cost to cast this spell, you may exile any number of black cards from your hand. Yuma, Proud Protector $0.35 5RGW · Human Ranger This spell costs {1} less to cast for each land card in your graveyard. Torgaar, Famine Incarnate $0.40 6BB · Avatar As an additional cost to cast this spell, you may sacrifice any number of creatures. Demilich $0.64 UUUU · Skeleton Wizard This spell costs {U} less to cast for each instant and sorcery spell you've cast this turn. Forbidden Ritual $0.95 2BB · Sorcery Sacrifice a nontoken permanent. Hierophant Bio-Titan $1.89 10GG · Tyranid Frenzied Metabolism — As an additional cost to cast this spell, you may remove any number of +1/+...