Is We Ride at Dawn legal in Standard, Modern, and Commander?

We Ride at Dawn is legal in: Legacy, Vintage, Commander.

What type of card is We Ride at Dawn?

We Ride at Dawn is an Enchantment. Its oracle text reads: "Legendary creature spells you cast have convoke. (Your creatures can help cast those spells. Each creature you tap while casting a legendary creature spell pays for {1} or one mana of that creature's color.) Whenever your commander attacks, create a 1/1 red Mercenary creature token with "{T}: Target creature you control gets +1/+0 until end of turn. Activate only as a sorcery.""

We Ride at Dawn

Enchantment

Legendary creature spells you cast have convoke. (Your creatures can help cast those spells. Each creature you tap while casting a legendary creature spell pays for or one mana of that creature's color.)

Whenever your commander attacks, create a 1/1 red Mercenary creature token with ": Target creature you control gets +1/+0 until end of turn. Activate only as a sorcery."