Is Serene Heart legal in Standard, Modern, and Commander?

Serene Heart is legal in: Legacy, Vintage, Commander, Pauper.

What type of card is Serene Heart?

Serene Heart is an Instant. Its oracle text reads: "Destroy all Auras."

Instant

Destroy all Auras.

Set Mirage

Rarity Common

Artist D. Alexander Gregory

Instant Commander Pauper Legacy