Is Dog Umbra legal in Standard, Modern, and Commander?

Dog Umbra is legal in: Modern, Legacy, Vintage, Commander, Pauper, Historic.

Dog Umbra

Q: What type of card is Dog Umbra?

Dog Umbra is an Enchantment — Aura. Its oracle text reads: "Flash Enchant creature As long as another player controls enchanted creature, it can't attack or block. Otherwise, this Aura has umbra armor. (If enchanted creature would be destroyed, instead remove all damage from it and destroy this Aura.)"

Enchantment — Aura

Flash

Enchant creature

As long as another player controls enchanted creature, it can't attack or block. Otherwise, this Aura has umbra armor. (If enchanted creature would be destroyed, instead remove all damage from it and destroy this Aura.)

Set Modern Horizons 3

Rarity Common

Mana Value 2

Artist Brian Valeza

Collector # 22

Scryfall Gatherer