Is Ebon Stronghold legal in Standard, Modern, and Commander?

Ebon Stronghold is legal in: Legacy, Vintage, Commander.

What type of card is Ebon Stronghold?

Ebon Stronghold is a Land. Its oracle text reads: "Ebon Stronghold enters tapped.{T}: Add {B}.{T}, Sacrifice Ebon Stronghold: Add {B}{B}."

Land

Ebon Stronghold enters tapped.<br>: Add .<br>, Sacrifice Ebon Stronghold: Add .

Set Fallen Empires

Rarity Uncommon

Artist Mark Poole

Land Commander Legacy Vintage