Is Buried Treasure legal in Standard, Modern, and Commander?

Buried Treasure is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

Buried Treasure

Q: What type of card is Buried Treasure?

Buried Treasure is an Artifact — Treasure. Its oracle text reads: "{T}, Sacrifice this artifact: Add one mana of any color. {5}, Exile this card from your graveyard: Discover 5. Activate only as a sorcery. (Exile cards from the top of your library until you exile a nonland card with mana value 5 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)"

Artifact — Treasure

, Sacrifice this artifact: Add one mana of any color.

, Exile this card from your graveyard: Discover 5. Activate only as a sorcery. (Exile cards from the top of your library until you exile a nonland card with mana value 5 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)