Is Campfire legal in Standard, Modern, and Commander?

Campfire is legal in: Legacy, Vintage, Commander, Pauper.

Campfire

Q: What type of card is Campfire?

Campfire is an Artifact. Its oracle text reads: "{1}, {T}: You gain 2 life. {2}, {T}, Exile this artifact: Put all commanders you own from the command zone and from your graveyard into your hand. Then shuffle your graveyard into your library."

Artifact

, : You gain 2 life.

, , Exile this artifact: Put all commanders you own from the command zone and from your graveyard into your hand. Then shuffle your graveyard into your library.