Cryptid Inspector is a common Creature — Elf Warrior card from Duskmourn: House of Horror (DSK), collector number 174. Current market price: $0.16 (foil $0.15), TCGplayer market prices via Scryfall.
Vigilance Whenever a face-down permanent you control enters and whenever this creature or another permanent you control is turned face up, put a +1/+1 counter on this creature.