Is Nim Deathmantle legal in Standard, Modern, and Commander?

Nim Deathmantle is legal in: Modern, Legacy, Vintage, Commander.

Nim Deathmantle

Q: What type of card is Nim Deathmantle?

Nim Deathmantle is an Artifact — Equipment. Its oracle text reads: "Equipped creature gets +2/+2, has intimidate, and is a black Zombie. (A creature with intimidate can't be blocked except by artifact creatures and/or creatures that share a color with it.) Whenever a nontoken creature is put into your graveyard from the battlefield, you may pay {4}. If you do, return that card to the battlefield and attach this Equipment to it. Equip {4}"

Artifact — Equipment

Equipped creature gets +2/+2, has intimidate, and is a black Zombie. (A creature with intimidate can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Whenever a nontoken creature is put into your graveyard from the battlefield, you may pay . If you do, return that card to the battlefield and attach this Equipment to it.