Grim Flayer is a rare Creature — Human Warrior card from Double Masters 2022 (2X2), collector number 380. Current market price: $0.45 (foil $0.54), TCGplayer market prices via Scryfall.
Trample Whenever this creature deals combat damage to a player, surveil 3. (Look at the top three cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) Delirium — This creature gets +2/+2 as long as there are four or more card types among cards in your graveyard.