Keen-Eyed Curator is a rare Creature — Raccoon Scout card from Bloomburrow (BLB), collector number 181. Current market price: $1.60 (foil $2.30), 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.