Is Susan Foreman legal in Standard, Modern, and Commander?

Susan Foreman is legal in: Legacy, Vintage, Commander.

Susan Foreman

Q: What type of card is Susan Foreman?

Susan Foreman is a Legendary Creature — Time Lord. Its oracle text reads: "If you would planeswalk, instead look at the top two cards of your planar deck, put one on the bottom of your planar deck and the other on top, then planeswalk. {T}: Add {G}. Doctor's companion (You can have two commanders if the other is the Doctor.) Power/Toughness: 1/1"

Legendary Creature — Time Lord

If you would planeswalk, instead look at the top two cards of your planar deck, put one on the bottom of your planar deck and the other on top, then planeswalk.

: Add .