Is Knightly Valor legal in Standard, Modern, and Commander?

Knightly Valor is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

Knightly Valor

Q: What type of card is Knightly Valor?

Knightly Valor is an Enchantment — Aura. Its oracle text reads: "Enchant creatureWhen Knightly Valor enters, create a 2/2 white Knight creature token with vigilance. (Attacking doesn't cause it to tap.)Enchanted creature gets +2/+2 and has vigilance."

Enchantment — Aura

Enchant creature<br>When Knightly Valor enters, create a 2/2 white Knight creature token with vigilance. (Attacking doesn't cause it to tap.)<br>Enchanted creature gets +2/+2 and has vigilance.

Set Pioneer Masters

Rarity Common

Artist Matt Stewart