Nyla, Shirshu Sleuth is a rare Legendary Creature — Mole Beast card from Avatar: The Last Airbender Eternal (TLE), collector number 190. Current market price: $0.37 (foil $0.42), TCGplayer market prices via Scryfall.
When Nyla enters, exile up to one target creature card from your graveyard. If you do, you lose X life and create X Clue tokens, where X is that card's mana value. (A Clue token is an artifact with "{2}, Sacrifice this token: Draw a card.") At the beginning of your end step, if you control no Clues, return target card exiled with Nyla to its owner's hand.