Is Persistent Petitioners legal in Standard, Modern, and Commander?

Persistent Petitioners is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

Persistent Petitioners

Q: What type of card is Persistent Petitioners?

Persistent Petitioners is a Creature — Human Advisor. Its oracle text reads: "{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. Power/Toughness: 1/3"