Is Scythe of the Wretched legal in Standard, Modern, and Commander?

Scythe of the Wretched is legal in: Modern, Legacy, Vintage, Commander.

Scythe of the Wretched

Q: What type of card is Scythe of the Wretched?

Scythe of the Wretched is an Artifact — Equipment. Its oracle text reads: "Equipped creature gets +2/+2. Whenever a creature dealt damage by equipped creature this turn dies, return that card to the battlefield under your control. Attach this Equipment to that creature. Equip {4}"

Artifact — Equipment

Equipped creature gets +2/+2.

Whenever a creature dealt damage by equipped creature this turn dies, return that card to the battlefield under your control. Attach this Equipment to that creature.

Equip