Is Lokhust Heavy Destroyer legal in Standard, Modern, and Commander?

Lokhust Heavy Destroyer is legal in: Legacy, Vintage, Commander.

What type of card is Lokhust Heavy Destroyer?

Lokhust Heavy Destroyer is an Artifact Creature — Necron. Its oracle text reads: "Flying Enmitic Exterminator — When this creature enters, each player sacrifices a creature of their choice. Unearth {5}{B}{B}{B} ({5}{B}{B}{B}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)"

Lokhust Heavy Destroyer

Artifact Creature — Necron

Flying

Enmitic Exterminator — When this creature enters, each player sacrifices a creature of their choice.

Unearth (: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)