Is Ragost, Deft Gastronaut legal in Standard, Modern, and Commander?

Ragost, Deft Gastronaut is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

What type of card is Ragost, Deft Gastronaut?

Ragost, Deft Gastronaut is a Legendary Creature — Lobster Citizen. Its oracle text reads: "Artifacts you control are Foods in addition to their other types and have "{2}, {T}, Sacrifice this artifact: You gain 3 life." {1}, {T}, Sacrifice a Food: Ragost deals 3 damage to each opponent. At the beginning of each end step, if you gained life this turn, untap Ragost."