Lagonna-Band Storyteller is a uncommon Creature — Centaur Advisor card from Theros Beyond Death (THB), collector number 27. Current market price: $0.15 (foil $0.39), TCGplayer market prices via Scryfall.
When this creature enters, you may put target enchantment card from your graveyard on top of your library. If you do, you gain life equal to its mana value.