Is Dwarven Ruins legal in Standard, Modern, and Commander?

Dwarven Ruins is legal in: Legacy, Vintage, Commander.

What type of card is Dwarven Ruins?

Dwarven Ruins is a Land. Its oracle text reads: "Dwarven Ruins enters tapped.{T}: Add {R}.{T}, Sacrifice Dwarven Ruins: Add {R}{R}."

Land

Dwarven Ruins enters tapped.<br>: Add .<br>, Sacrifice Dwarven Ruins: Add .

Set Fallen Empires

Rarity Uncommon

Artist Mark Poole

Land Commander Legacy Vintage