Is Perennial Behemoth legal in Standard, Modern, and Commander?

Perennial Behemoth is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Perennial Behemoth

Q: What type of card is Perennial Behemoth?

Perennial Behemoth is an Artifact Creature — Beast. Its oracle text reads: "You may play lands from your graveyard. Unearth {G}{G} ({G}{G}: 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.)"

Artifact Creature — Beast

You may play lands from your graveyard.

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.)