Leaf-Crowned Visionary is a mythic Creature — Elf Druid card from Special Guests (SPG), collector number 140. Current market price: $8.83 (foil $9.81), 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.