Is Port of Karfell legal in Standard, Modern, and Commander?

Port of Karfell is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Port of Karfell

Q: What type of card is Port of Karfell?

Port of Karfell is a Land. Its oracle text reads: "This land enters tapped. {T}: Add {U}. {3}{U}{B}{B}, {T}, Sacrifice this land: Mill four cards, then return a creature card from your graveyard to the battlefield tapped. (To mill a card, put the top card of your library into your graveyard.)"

Land

This land enters tapped.

: Add .

, , Sacrifice this land: Mill four cards, then return a creature card from your graveyard to the battlefield tapped. (To mill a card, put the top card of your library into your graveyard.)