Is Extractor Demon legal in Standard, Modern, and Commander?

Extractor Demon is legal in: Modern, Legacy, Vintage, Commander.

What type of card is Extractor Demon?

Extractor Demon is a Creature — Demon. Its oracle text reads: "Flying Whenever another creature leaves the battlefield, you may have target player mill two cards. Unearth {2}{B} ({2}{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.) Power/Toughness: 5/5"

Extractor Demon

Creature — Demon

Flying

Whenever another creature leaves the battlefield, you may have target player mill two cards.

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.)