Scrib Nibblers is a uncommon Creature — Rat card from Worldwake (WWK), collector number 66. Current market price: $0.38 (foil $2.38), TCGplayer market prices via Scryfall.
{T}: Exile the top card of target player's library. If it's a land card, you gain 1 life. Landfall — Whenever a land you control enters, you may untap this creature.