Boss's Chauffeur is a rare Creature — Elf Citizen card from Bloomburrow Commander (BLC), collector number 137. Current market price: $0.26, TCGplayer market prices via Scryfall.
This creature enters with a number of +1/+1 counters on it equal to one plus the number of other creatures you control. Alliance — Whenever another creature you control enters, put a +1/+1 counter on this creature. When this creature dies, create a 1/1 green and white Citizen creature token for each +1/+1 counter on it.