Is Glaive of the Guildpact legal in Standard, Modern, and Commander?

Glaive of the Guildpact is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Glaive of the Guildpact

Q: What type of card is Glaive of the Guildpact?

Glaive of the Guildpact is an Artifact — Equipment. Its oracle text reads: "Equipped creature gets +1/+0 for each Gate you control and has vigilance and menace. (A creature with menace can't be blocked except by two or more creatures.) Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery.)"

Artifact — Equipment

Equipped creature gets +1/+0 for each Gate you control and has vigilance and menace. (A creature with menace can't be blocked except by two or more creatures.)

Equip (: Attach to target creature you control. Equip only as a sorcery.)