Is Bag of Holding legal in Standard, Modern, and Commander?

Bag of Holding is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

What type of card is Bag of Holding?

Bag of Holding is an Artifact. Its oracle text reads: "Whenever you discard a card, exile that card from your graveyard. {2}, {T}: Draw a card, then discard a card. {4}, {T}, Sacrifice this artifact: Return all cards exiled with this artifact to their owner's hand."