Chief Magistrate of Mercadia is a rare Legendary Creature — Human Noble card from Mystery Booster: Commander Edition (MBC), collector number 35.
When Chief Magistrate of Mercadia enters, you become the monarch. At the beginning of your upkeep, create a 2/1 red Goblin creature token with haste. Then if you're the monarch, for each creature token you control, create a token that's a copy of it.