Feed the Machine (Schemes) [Archenemy Schemes] Phyrexian Thopter Instant and sorcery spells you

Instant and sorcery spells you cast cost 1 less to cast

Set: March of the Machine: The Aftermath Type: Creature — Angel Cleric Rarity: Rare Cost: {2}{W} Flying

Set: Double Masters Type: Creature — Spirit Rarity: Common Cost: {3}{W} Lifelink

Set: Double Masters Type: Creature — Vampire Rarity: Common Cost: {3}{B} When Driver of the Dead dies

but in the end

Feed the Machine (Schemes) [Archenemy Schemes] Phyrexian Thopter Instant and sorcery spells youSet: Archenemy Schemes Type: Scheme Rarity: Common When you set this scheme in motion, target opponent chooses self or others. If that player chooses self, the player sacrifices two creatures. If the player chooses others, each of your other opponents sacrifices a creature. "Even you have a purpose. Your blood will oil the gears."