The Policy Maker is a rare Legendary Creature — Human Judge card from Unknown Event (UNK), collector number RZ03o. Current market price: $9.99, TCGplayer market prices via Scryfall.
Whenever The Policy Maker enters or attacks, ask a player outside the game to propose a new rule. If each player in the game agrees to the rule, apply it for the rest of the game. If an opponent doesn't agree to the rule, put a +1/+1 counter on The Policy Maker.