Is Celestial Armor legal in Standard, Modern, and Commander?

Celestial Armor is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Celestial Armor

Q: What type of card is Celestial Armor?

Celestial Armor is an Artifact — Equipment. Its oracle text reads: "Flash (You may cast this spell any time you could cast an instant.) When this Equipment enters, attach it to target creature you control. That creature gains hexproof and indestructible until end of turn. Equipped creature gets +2/+0 and has flying. Equip {3}{W} ({3}{W}: Attach to target creature you control. Equip only as a sorcery.)"