Nimble Mongoose is a common Creature — Mongoose card from Eternal Masters (EMA), collector number 179. Current market price: $0.25 (foil $0.40), TCGplayer market prices via Scryfall.
Shroud (This creature can't be the target of spells or abilities.) Threshold — This creature gets +2/+2 as long as there are seven or more cards in your graveyard.