Feed the Machine is a common Scheme card from Archenemy Schemes (OARC), collector number 14★. Current market price: $4.11, TCGplayer market prices via Scryfall.
When you set this scheme in motion, target opponent chooses self or others. If that player chooses self, the player sacrifices two creatures of their choice. If the player chooses others, each of your other opponents sacrifices a creature of their choice.