Nature Demands an Offering is a common Scheme card from Archenemy Schemes (OARC), collector number 31★. Current market price: $2.48, TCGplayer market prices via Scryfall.
When you set this scheme in motion, target opponent chooses a creature you don't control and puts it on top of its owner's library, then repeats this process for an artifact, an enchantment, and a land. Then the owner of each permanent chosen this way shuffles.