Is Faceless Agent legal in Standard, Modern, and Commander?

Faceless Agent is legal in: Historic.

Faceless Agent

Q: What type of card is Faceless Agent?

Faceless Agent is a Creature — Shapeshifter. Its oracle text reads: "Changeling When Faceless Agent enters the battlefield, seek a creature card of the most prevalent creature type in your library. (To seek a card, put one at random from your library into your hand.) Power/Toughness: 2/2"

Creature — Shapeshifter

Changeling

When Faceless Agent enters the battlefield, seek a creature card of the most prevalent creature type in your library. (To seek a card, put one at random from your library into your hand.)

Power/Toughness: 2/2

Set Jumpstart: Historic Horizons

Rarity Common

Mana Value 3

Artist Nicholas Gregory

Collector # 1

Scryfall