Is Arm the Cathars legal in Standard, Modern, and Commander?

Arm the Cathars is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Arm the Cathars

Q: What type of card is Arm the Cathars?

Arm the Cathars is a Sorcery. Its oracle text reads: "Until end of turn, target creature gets +3/+3, up to one other target creature gets +2/+2, and up to one other target creature gets +1/+1. Those creatures gain vigilance until end of turn."

Sorcery

Until end of turn, target creature gets +3/+3, up to one other target creature gets +2/+2, and up to one other target creature gets +1/+1. Those creatures gain vigilance until end of turn.

Set Innistrad: Crimson Vow

Rarity Uncommon

Mana Value 3

Artist Zoltan Boros

Collector # 3

Scryfall Gatherer