Splinterfright is a rare Creature — Elemental card from Commander 2020 (C20), collector number 191. Current market price: $0.27, TCGplayer market prices via Scryfall.
Trample Splinterfright's power and toughness are each equal to the number of creature cards in your graveyard. At the beginning of your upkeep, mill two cards. (Put the top two cards of your library into your graveyard.)