Persistent Petitioners is a common Creature — Human Advisor card from Ravnica Allegiance (RNA), collector number 44. Current market price: $0.76 (foil $1.97), TCGplayer market prices via Scryfall.
{1}, {T}: Target player mills a card. (They put the top card of their library into their graveyard.) Tap four untapped Advisors you control: Target player mills twelve cards. A deck can have any number of cards named Persistent Petitioners.