Lucy MacLean, Positively Armed is a mythic Legendary Creature — Human Survivor card from Secret Lair Drop (SLD), collector number 2447. Current market price: $4.03 (foil $5.37), TCGplayer market prices via Scryfall.
Golden Rule — Whenever a token enters, you may have target player other than its controller create a token that's a copy of it, then you draw a card if an opponent created a token this way. Do this only once each turn.