Is Urianger Augurelt legal in Standard, Modern, and Commander?

Urianger Augurelt is legal in: Legacy, Vintage, Commander.

What type of card is Urianger Augurelt?

Urianger Augurelt is a Legendary Creature — Elf Advisor. Its oracle text reads: "Whenever you play a land from exile or cast a spell from exile, you gain 2 life. Draw Arcanum — {T}: Look at the top card of your library. You may exile it face down. Play Arcanum — {T}: Until end of turn, you may play cards exiled with Urianger Augurelt. Spells you cast this way cost {2} less to cast."