Leaf-Crowned Visionary is a rare Creature — Elf Druid card from Dominaria United Promos (PDMU), collector number 167p. Current market price: $5.76 (foil $5.36), TCGplayer market prices via Scryfall.
Other Elves you control get +1/+1. Whenever you cast an Elf spell, you may pay {G}. If you do, draw a card.