Lathril, Blade of the Elves is a rare Legendary Creature — Elf Noble card from Foundations Promos (PFDN), collector number 242s. Current market price: — (foil $5.47), TCGplayer market prices via Scryfall.
Menace (This creature can't be blocked except by two or more creatures.) Whenever Lathril deals combat damage to a player, create that many 1/1 green Elf Warrior creature tokens. {T}, Tap ten untapped Elves you control: Each opponent loses 10 life and you gain 10 life.