Is Armored Warhorse legal in Standard, Modern, and Commander?

Armored Warhorse is legal in: Modern, Legacy, Vintage, Commander, Pauper.

Armored Warhorse

Q: What type of card is Armored Warhorse?

Armored Warhorse is a Creature — Horse. Its oracle text reads: "*"When we of the Northern Verge claim a mount, no peasant's nag will do. It must be as strong as our virtue, and must join us of its own will." —Sarlena, paladin of the Northern Verge* Power/Toughness: 2/3"