Body of Research is a mythic Sorcery card from Strixhaven: School of Mages Promos (PSTX), collector number 168p. Current market price: $5.42 (foil $3.65), TCGplayer market prices via Scryfall.
Create a 0/0 green and blue Fractal creature token. Put X +1/+1 counters on it, where X is the number of cards in your library.