Keen-Eyed Curator is a rare Creature — Raccoon Scout card from Bloomburrow Promos (PBLB), collector number 181p. Current market price: $1.49 (foil $2.53), TCGplayer market prices via Scryfall.
As long as there are four or more card types among cards exiled with this creature, it gets +4/+4 and has trample. {1}: Exile target card from a graveyard.