Is Stirring Bard legal in Standard, Modern, and Commander?

Stirring Bard is legal in: Legacy, Vintage, Commander. It is banned in: Pauper.

What type of card is Stirring Bard?

Stirring Bard is a Creature — Dragon Bard. Its oracle text reads: "Defender When this creature enters, you take the initiative. Mantle of Inspiration — {T}: Target creature gains menace and haste until end of turn. *At the first sign of danger, she breaks out the power chords.* Power/Toughness: 0/4"