Beza, the Bounding Spring is a mythic Legendary Creature — Elemental Elk card from Bloomburrow (BLB), collector number 287. Current market price: $7.47 (foil $13.50), TCGplayer market prices via Scryfall.
When Beza enters, create a Treasure token if an opponent controls more lands than you. You gain 4 life if an opponent has more life than you. Create two 1/1 blue Fish creature tokens if an opponent controls more creatures than you. Draw a card if an opponent has more cards in hand than you.