Is Paragon of the Amesha legal in Standard, Modern, and Commander?

Paragon of the Amesha is legal in: Modern, Legacy, Vintage, Commander.

Paragon of the Amesha

Q: What type of card is Paragon of the Amesha?

Paragon of the Amesha is a Creature — Human Knight. Its oracle text reads: "First strike {W}{U}{B}{R}{G}: Until end of turn, this creature becomes an Angel, gets +3/+3, and gains flying and lifelink. *"Let my lance sing with the voices of angels and the heathen cower before my shield, for I will teach this land the meaning of honor."* Power/Toughness: 2/2"