Is Armor of Thorns legal in Standard, Modern, and Commander?

Armor of Thorns is legal in: Legacy, Vintage, Commander, Pauper.

Armor of Thorns

Q: What type of card is Armor of Thorns?

Armor of Thorns is an Enchantment — Aura. Its oracle text reads: "You may cast Armor of Thorns as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step.Enchant nonblack creatureEnchanted creature gets +2/+2."

Enchantment — Aura

You may cast Armor of Thorns as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step.<br>Enchant nonblack creature<br>Enchanted creature gets +2/+2.

Set Mirage

Rarity Common

Artist Alan Rabinowitz