Is Piety legal in Standard, Modern, and Commander?

Piety is legal in: Legacy, Vintage, Commander, Pauper.

What type of card is Piety?

Piety is an Instant. Its oracle text reads: "Blocking creatures get +0/+3 until end of turn."

Instant

Blocking creatures get +0/+3 until end of turn.

Set Arabian Nights

Rarity Common

Artist Mark Poole

Instant Commander Pauper Legacy