Your Nightmares Are Delicious is a common Scheme card from Duskmourn: House of Horror Commander (DSC), collector number 365. Current market price: $0.32, TCGplayer market prices via Scryfall.
When you set this scheme in motion, each opponent who has more than five cards in hand discards cards equal to the difference. Then if fewer than three cards were discarded this way, you draw three cards.