Is Dungeon Descent legal in Standard, Modern, and Commander?

Dungeon Descent is legal in: Modern, Pioneer, Legacy, Vintage, Commander.

Dungeon Descent

Q: What type of card is Dungeon Descent?

Dungeon Descent is a Land. Its oracle text reads: "This land enters tapped. {T}: Add {C}. {4}, {T}, Tap an untapped legendary creature you control: Venture into the dungeon. Activate only as a sorcery. (Enter the first room or advance to the next room.)"

Land

$0.27 ↗20 similarCommander, Modern

This land enters tapped.

: Add .

, , Tap an untapped legendary creature you control: Venture into the dungeon. Activate only as a sorcery. (Enter the first room or advance to the next room.)