A Premonition of Your Demise is a common Scheme card from Duskmourn: House of Horror Commander (DSC), collector number 353. Current market price: $0.26, TCGplayer market prices via Scryfall.
When you set this scheme in motion, reveal the top two cards of your library and put them into your hand. When you reveal one or more nonland cards this way, this scheme deals damage equal to their total mana value to any target.