Is Righteousness legal in Standard, Modern, and Commander?

Righteousness is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

What type of card is Righteousness?

Righteousness is an Instant. Its oracle text reads: "Target blocking creature gets +7/+7 until end of turn."

Instant

Target blocking creature gets +7/+7 until end of turn.

Set Limited Edition Alpha

Rarity Rare

Artist Douglas Shuler

Instant Modern Pioneer Commander