Is Temple of the Dragon Queen legal in Standard, Modern, and Commander?

Temple of the Dragon Queen is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Temple of the Dragon Queen

Q: What type of card is Temple of the Dragon Queen?

Temple of the Dragon Queen is a Land. Its oracle text reads: "As this land enters, you may reveal a Dragon card from your hand. This land enters tapped unless you revealed a Dragon card this way or you control a Dragon. As this land enters, choose a color. {T}: Add one mana of the chosen color."

Land

As this land enters, you may reveal a Dragon card from your hand. This land enters tapped unless you revealed a Dragon card this way or you control a Dragon.

As this land enters, choose a color.

: Add one mana of the chosen color.