Is Nykthos, Shrine to Nyx legal in Standard, Modern, and Commander?

Nykthos, Shrine to Nyx is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Nykthos, Shrine to Nyx

Q: What type of card is Nykthos, Shrine to Nyx?

Nykthos, Shrine to Nyx is a Legendary Land. Its oracle text reads: "{T}: Add {C}. {2}, {T}: Choose a color. Add an amount of mana of that color equal to your devotion to that color. (Your devotion to a color is the number of mana symbols of that color in the mana costs of permanents you control.)"

Legendary Land

: Add .

, : Choose a color. Add an amount of mana of that color equal to your devotion to that color. (Your devotion to a color is the number of mana symbols of that color in the mana costs of permanents you control.)