Is Transplant Theorist legal in Standard, Modern, and Commander?

Transplant Theorist is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Transplant Theorist

Q: What type of card is Transplant Theorist?

Transplant Theorist is an Artifact Creature — Phyrexian Artificer. Its oracle text reads: "Whenever this creature or another artifact you control enters, you may draw a card. If you do, discard a card. {2}: Put target card from your graveyard on the bottom of your library. Power/Toughness: 2/4"